instrument harlow wilcox 
A rehearsal is an activity in the performing arts that occurs as preparation for a performance in music , theatre , dance and related arts , such as opera , musical theatre and film production . It is undertaken as a form of practising , to ensure that all details of the subsequent performance are adequately prepared and coordinated . The term " rehearsal " typically refers to ensemble activities undertaken by a group of people . For example , when a musician is preparing a ___MASK76___ concerto alone in their music studio , this is called " practicing ", but when they begin to practice the concerto with an orchestra , this activity is called a " rehearsal ". The music rehearsal takes place in a music rehearsal space . A rhythm section ( also called a backup band ) is a group of musicians within a music ensemble or band who provide the underlying rhythm and pulse of the accompaniment , providing a rhythmic reference and " beat " for the rest of the band . Many of the rhythm section instruments , such as keyboard instruments and guitars , are also used to play the chord progression upon which the song is based . The ___MASK61___ instrument ( either ___MASK36___ or electric ___MASK61___ , or another low - register instrument , such as synth ___MASK61___ , depending on the group and its style of music ) plays the low - pitched bassline that supports the chord progression , typically by emphasizing the roots of the chords ( and to a lesser degree the fifths and thirds of the chords ). A song , most broadly , is a single ( and often standalone ) work of music that is typically intended to be sung by the ___MASK90___ with distinct and fixed pitches and patterns using sound and silence and a variety of forms that often include the repetition of sections . Written words created specifically for music or for which music is specifically created , are called lyrics . If a pre - existing poem is set to composed music in classical music it is an art song . Songs that are sung on repeated pitches without distinct contours and patterns that rise and fall are called chants . Songs in a simple style that are learned informally are often referred to as folk songs . Songs that are composed for professional singers who sell their recordings or live shows to the mass market are called popular songs . These songs , which have broad appeal , are often composed by professional songwriters , composers and lyricists . Art songs are composed by trained classical composers for concert or recital performances . Songs are performed live and recorded on audio or video ( or in some , cases , a song may be performed live and simultaneously recorded ). Songs may also appear in plays , musical theatre , stage shows of any form , and within operas . The ___MASK76___ is an acoustic , stringed musical instrument , in which the strings are struck by hammers . It is played using a keyboard , which is a row of keys ( small levers ) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings . Invented in about 1700 ( the exact year is uncertain ), the ___MASK76___ is widely employed in classical , jazz , traditional and popular music for solo and ensemble performances , accompaniment , and for composing , songwriting and rehearsals . Although the ___MASK76___ is very heavy and thus not portable and is expensive ( in comparison with other widely used accompaniment instruments , such as the acoustic ___MASK57___ ), its musical versatility ( i . e ., its wide pitch range , ability to play chords with up to 10 notes , louder or softer notes and two or more independent musical lines at the same time ), the large number of musicians and amateurs trained in playing it , and its wide availability in performance venues , schools and rehearsal spaces have made it one of the Western world ' s most familiar musical instruments . The ___MASK36___ or simply the bass ( and numerous other names ) is the largest and lowest - pitched bowed string instrument in the modern symphony orchestra . It is a transposing instrument and is typically notated one octave higher than sounding to avoid excessive ledger lines below the staff . The ___MASK36___ is the only modern bowed string instrument that is tuned in fourths ( like a viol ), rather than fifths , with strings usually tuned to E , A , D and G . The instrument ' s exact lineage is still a matter of some debate , with scholars divided on whether the bass is derived from the viol or the violin family . A composer ( Latin " compn "; literally " one who puts together ") is a person who creates or writes music , which can be vocal music ( for a singer or choir ), instrumental music ( e . g ., for solo ___MASK76___ , string quartet , wind quintet or orchestra ) or music which combines both instruments and voices ( e . g ., opera or art song , which is a singer accompanied by a pianist ). The core meaning of the term refers to individuals who have contributed to the tradition of Western classical music through creation of works expressed in written musical notation ( e . g ., sheet music scores ). A ___MASK48___  also called a drum set , trap set , or simply drums  is a collection of drums and other percussion instruments , typically cymbals , which are set up on stands to be played by a single player with drumsticks held in both hands and the feet operating pedals that control the hi - hat cymbal and the beater for the ___MASK4___ . A ___MASK48___ consists of a mix of drums ( categorized classically as membranophones , Hornbostel - Sachs high - level classification 2 ) and idiophones most significantly cymbals but also including the woodblock and cowbell ( classified as Hornbostel - Sachs high - level classification 1 ). In the 2000s , some kits also include electronic instruments ( Hornbostel - Sachs classification 53 ) and both hybrid and entirely electronic kits are used . A standard modern kit ( for a right - handed player ), as used in popular music and taught in music schools , contains : Music is an art form and cultural activity whose medium is sound and silence , which exist in time . The common elements of music are pitch ( which governs melody and harmony ), rhythm ( and its associated concepts tempo , meter , and articulation ), dynamics ( loudness and softness ), and the sonic qualities of timbre and texture ( which are sometimes termed the " color " of a musical sound ). Different styles or types of music may emphasize , de - emphasize or omit some of these elements . Music is performed with a vast range of instruments and vocal techniques ranging from ___MASK34___ to rapping ; there are solely instrumental pieces , solely vocal pieces ( such as songs without instrumental accompaniment ) and pieces that combine ___MASK34___ and instruments . The word derives from Greek  (" mousike "; " art of the Muses "). In its most general form , the activities describing music as an art form include the production of works of music ( songs , tunes , symphonies , and so on ), the criticism of music , the study of the history of music , and the aesthetic examination of music . Ancient Greek and Indian philosophers defined music as tones ordered horizontally as melodies and vertically as harmonies . Common sayings such as " the harmony of the spheres " and " it is music to my ears " point to the notion that music is often ordered and pleasant to listen to . However , 20th - century composer John Cage thought that any sound can be music , saying , for example , " There is no noise , only sound ." Country music is a genre of United States popular music that originated in the southern United States in the 1920s . It takes its roots from the southeastern genre of United States , such as folk music ( especially Appalachian folk music ), and blues music . Blues modes have been used extensively throughout its recorded history . Country music often consists of ballads and dance tunes with generally simple forms and harmonies accompanied by mostly string instruments such as banjos , electric and acoustic guitars , dobros and fiddles as well as harmonicas . According to Lindsey Starnes , the term " country music " gained popularity in the 1940s in preference to the earlier term " hillbilly music "; it came to encompass Western music , which evolved parallel to hillbilly music from similar roots , in the mid - 20th century . The term " country music " is used today to describe many styles and subgenres . The origins of country music are the folk music of working - class Americans , who blended popular songs , Irish and Celtic ___MASK7___ tunes , traditional English ballads , and cowboy songs , and various musical traditions from European immigrant communities . In 2009 country music was the most listened to rush hour radio genre during the evening commute , and second most popular in the morning commute in the United States . An instrumental is a musical composition or recording without lyrics , or ___MASK34___ , although it might include some inarticulate vocals , such as shouted backup vocals in a Big Band setting . The music is primarily or exclusively produced by musical instruments . An instrumental can exist in music notation , after it is written by a composer ; in the mind of the composer ( especially in cases where the composer herself will perform the piece , as in the case of a blues solo guitarist or a folk music fiddle player ); as a piece that is performed live by a single instrumentalist or a musical ensemble , which could range in size from a duo or trio to a large Big Band , concert band or orchestra . ___MASK34___ is the act of producing musical sounds with the voice , and augments regular speech by the use of sustained tonality , rhythm , and a variety of vocal techniques . A person who sings is called a singer or vocalist . Singers perform music ( arias , recitatives , songs , etc .) that can be sung with or without accompaniment by musical instruments . ___MASK34___ is often done in an ensemble of musicians , such as a choir of singers or a band of instrumentalists . Singers may perform as soloists , or accompanied by anything from a single instrument ( as in art song or some jazz styles ) up to a symphony orchestra or big band . Different ___MASK34___ styles include art music such as opera and Chinese opera , religious music styles such as gospel , traditional music styles , world music , jazz , blues and popular music styles such as pop and rock . An orchestra is a large instrumental ensemble typical of classical music , which features string instruments such as ___MASK96___ , ___MASK52___ , cello and ___MASK36___ , as well as brass , woodwinds , and percussion instruments , grouped in sections . Other instruments such as the piano and celesta may sometimes appear in a fifth keyboard section or may stand alone , as may the concert harp and , for performances of some modern compositions , electronic instruments . A bandleader is the leader of a music group such as a rock or pop group or jazz quartet . The term is most commonly , though not exclusively , used with a group that plays popular music as a small combo or a big band , such as one which plays jazz , blues , rhythm and blues or rock and roll music . Most bandleaders are also performers with their own band , either as singers or as instrumentalists , playing an instrument such as electric ___MASK57___ , piano , or other instruments . A musical ensemble , also known as a music group or musical group , is a group of people who perform instrumental and / or vocal music , with the ensemble typically known by a distinct name . Some music ensembles consist solely of instruments , such as the jazz quartet or the orchestra . Some music ensembles consist solely of singers , such as choirs and doo wop groups . In both popular music and classical music , there are ensembles in which both instrumentalists and singers perform , such as the rock band or the Baroque chamber group for basso continuo ( ___MASK1___ and ___MASK92___ ) and one or more singers . In classical music , trios or quartets either blend the sounds of musical instrument families ( such as piano , strings , and wind instruments ) or group together instruments from the same instrument family , such as string ensembles ( e . g ., string quartet ) or wind ensembles ( e . g ., wind quintet ). Some ensembles blend the sounds of a variety of instrument families , such as the orchestra , which uses a string section , brass instruments , woodwinds and percussion instruments , or the concert band , which uses brass , woodwinds and percussion . An electric ___MASK57___ is a fretted string instrument that uses a pickup to convert the vibration of its strings  which are typically made of steel , and which occurs when a guitarist strums , plucks or fingerpicks the strings  into electrical signals . The vibrations of the strings are sensed by a pickup , of which the most common type is the magnetic pickup , which uses the principle of direct electromagnetic induction . The signal generated by an electric ___MASK57___ is too weak to drive a loudspeaker , so it is plugged into a ___MASK57___ amplifier before being sent to a loudspeaker , which makes a sound loud enough to hear . The output of an electric ___MASK57___ is an electric signal , and the signal can easily be altered by electronic circuits to add " color " to the sound or change the sound . Often the signal is modified using effects such as reverb and distortion and " overdrive ", with the latter being a key element of the sound of the electric ___MASK57___ as it is used in blues and rock music . ___MASK7___ is another name for the bowed string musical instrument more often called a ___MASK96___ . It is also a colloquial term for the instrument used by players in all genres , including classical music . ___MASK7___ playing , or fiddling , refers to various styles of music . ___MASK7___ is also a common term among musicians who play folk music on the ___MASK96___ . The fiddle is part of many traditional ( folk ) styles of music which are aural traditions , taught ' by ear ' rather than via written music . ___MASK7___ is normally the term used for Irish Traditional Music . Harlow Wilcox ( January 28 , 1943 -- August 26 , 2002 ) was an American session musician from Norman , Oklahoma . In 1969 he released the instrumental single `` Groovy Grubworm '' on Plantation Records ( as Harlow Wilcox & the Oakies ) , which hit No . 30 on the U . S . Billboard Hot 100 chart late that year . Two albums followed . `` Groovy Grubworm '' has sold over a million copies and was nominated for a Grammy in 1969 . On August 26 , 2002 Wilcox died from a heart attack at his home in Oklahoma City . Blues is a genre and musical form originated by African Americans in the Deep South of the United States around the end of the 19th century . The genre developed from roots in African musical traditions , African - American work songs and European - American folk music . Blues incorporated spirituals , work songs , field hollers , shouts , chants , and rhymed simple narrative ballads . The blues form , ubiquitous in jazz , rhythm and blues and rock and roll , is characterized by the call - and - response pattern , the blues scale and specific chord progressions , of which the twelve - bar blues is the most common . Blue notes ( or " worried notes "), usually thirds or fifths flattened in pitch , are also an essential part of the sound . Blues shuffles or walking ___MASK61___ reinforce the trance - like rhythm and form a repetitive effect known as the groove . Session musicians , also called studio musicians , are professional instrumental performers who can be hired to play at live performances or in recording sessions . Many session musicians specialize in playing rhythm section instruments such as electric ___MASK57___ , piano , electric bass , double bass , or drum kit . Some session musicians " double " on multiple instruments , such as electric bass and double bass or keyboards and ___MASK57___ , a skill that enables them to play in a wider range of musical styles . Usually such musicians are not permanent members of a musical ensemble with the singers / soloists that they are accompanying and they often do not achieve individual fame in their own right as soloists or bandleaders . However , some backing bands of session musicians have become well known ( e . g ., The Wrecking Crew ). Skills and equipment . The term is applied to performers working in many musical styles , ranging from rock , R & B and soul music to country music . Versatility and excellent technique ( having strong rhythmic sense , playing notes and chords correctly , excellent intonation , etc .) are two of the most important skills of session musicians , as they may have to perform songs , tunes and pieces from a range of different styles in a range of different settings , often with little or no rehearsal time or personal practice time . As well , session musicians have an extensive knowledge of musical styles and idioms . A concert band , also called wind ensemble , symphonic band , wind symphony , wind orchestra , wind band , symphonic winds , symphony band , or symphonic wind ensemble , is a performing ensemble consisting of members of the woodwind , brass , and percussion families of instruments , along with the ___MASK36___ .