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 solo. The Phrase Trainer lets you load song (wav,mp3,wma etc...) slow down the playback speed to as little as 50% (or double-speed,why not?)of the original without changing its pitch, and loop the playback to repeat the phrase over and over until you get it! Or,when you mastered lick you are working on,you can change pitch of the song and practise that lick in other tonality! SPT-667 Phrase Trainer is the ultimate training and jamming tool for all kind of musicians. For beginners or seasoned pros,SPT-667 is the perfect way to learn your favorite songs and licks! This tool is made by musician for musicians!