Catch Me question

so the book is about a girl in a band that is opening for a more famous band. her and the lead singer of the band there are opening for fall in love.
someone in her band dies.
i know this book is apart of a series because in the second book she cheats on her boyfriend to go back to the guy in the first book that i just described. the cover of the first book is her with a guitar- no top- wearing jeans and her back is faced toward us.