Solo instrumental arrangements with audio accompaniment for 9 of Billie's biggest hits so far: Bad Guy · Everything I Wanted · I Love You · idontwannabeyouanymore · Lovely · No Time to Die · Ocean Eyes · When the Party's Over · You Should See Me in a Crown. The audio is accessed online using the unique code inside each book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.