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

• Price: 33.80 USD
• Merchant: desktopmetronome.com & supernova-soft.com
• Website: desktopmetronome.com