(Violin Play-Along). The Violin Play-Along Series will help you play your favorite songs quickly and easily. Just follow the music listen to the audio to hear how the violin should sound and then play along using the separate backing tracks. 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. This volume includes 8 Swift megahits including: Blank Space * I Knew You Were Trouble * Mean * Our Song * Shake It Off * We Are Never Ever Getting Back Together * White Horse * You Belong with Me.