One of the best product I have purchased, introduced to it through JustinGuitar on a Blue Immersion course. It has been invaluable for practicing along with supplied material and recommended song, use loop and slow dow to practice with. I have used it to transcribe, where it is great, slowing down individual bars and looking to help identify the notes, and then using it to properly write down the rhythm as well as the TAB, I have learnt and improved a lot this way.