The following article contains an answer for the question: What is the name of that which Tam Gunn explains  "caused a sea change" in mainstream music in the US and the UK? , can you please find it? 

Gary Mulholland of The Observer considers the release of Is This It a "world-changing moment" and notes that its impact was "immediate and dramatic" on both music and attire. BBC Radio 1's Zane Lowe suggests that the album moved popular opinion from DJs and pop music to "skinny jeans and guitars", "the template for rock 'n' roll in the modern day". Tam Gunn of FACT agrees and explains that it "caused a sea change" in mainstream music in the US and the UK, while Anthony Miccio of Stylus points out that the Strokes' success created the commercial context for "other new-wavers" to flourish. Rolling Stone writes that Is This It inspired "a ragged revolt" in Britain, led by the Libertines and Arctic Monkeys, and continued its influence in the US on the success of bands like Kings of Leon. The Observer shares a similar view and concludes that "a fine brood of heirs", like the Libertines and Franz Ferdinand, would not have existed and been successful if the Strokes had not reinvigorated "rock's obsession with having a good time". Jared Followill of Kings of Leon notes that the album was one of the main reasons that he wanted to get into a band; he states, "The title track was one of the first basslines I learned ... I was just 15 at the time."Jed Gottlieb of the Boston Herald argues that, although Is This It provided substantial musical influence, its biggest success was in revamping the music industry and making A&R delegates scout and promote alternative bands. Gunn links the success of alternative music in British charts throughout the 2000s to the album, but notes that "the copyists" could never match the attention to detail and heartfelt emotion of the Strokes. Mulholland adds that even the pop stars of that decade who rediscovered disco, electro, and synthpop owe a debt to the record, because its commercial success "made every forgotten art-pop experiment of the late 70s and early 80s instantly hip and ripe for reinvention". Hamish MacBain of NME writes that "the western world has moved on, and is now swinging...

Is This It