Have you ever tried to play along with song like "little wing" (Hendrix or SRV,no meter)? You grab your instrument,sit down,start song and...you find that original song is in E-...so you can retune your guitar or quit with that song...sounds familiar? with SPT-667 you can retune song!...And start playing while inspiration is still here! The SPT-667 Phrase Trainer makes learning riffs by ear really simple. Say you want to copy a guitar...