A BIG hand for Beanotone for uploading the first batch of midi backing tracks. I listened to them briefly and they sound really good. Like played by a person and not programmed. The files are in type 1 format (so that you can mute any tracks you like) and with Jammer Songmaker it is just to hit "Transfer to amp" and you are jammin'. (Or with a G-DEG play from the PC to the amp).