Based on the context and the answer, generate a question. 

Context: Well here is my picture post of the concert :D Sorry its so late . My sister ( standing on the left ) outside the stadium where the radio stations were set up . My sister had a go on the karaoke machine and one a bottle of Coke . She 's actually not a bad singer - unlike me : pOur seats and the stage before the show started . My sis and me spent about $ 100 on merchandise :p We got 4 shirts , and I bought a leather wristband like Taylor wears .

Answer:

They both needed to acquire concert tickets .



What may have happened before they went to their concert ?