2(Percussion). If you want to hone your skills accompanying guitar and vocals on the cajon, this is the right book to help you do just that! Listen to the professionally-recorded demonstration tracks to hear how the cajon should sound, then play along with the separate backing tracks. The price of this book includes online access to the audio tracks, for download or streaming, using the unique code inside the book! Songs include: Brave * Bubbly * Don't Know Why * Fast Car * Mean * Strong Enough * Sunny Came Home * The Way I Am.