I play by myself and want to be a better Lead player, but just ripping blues scales with no other backing is not much fun. I know there is a backing system on GT but I have heard the expression Practice Loop used by musicians.. What is the best tool to use to play lead over actual rythm or songs with the guitar stripped out. I have apercussion machine but it takes a NASA scientist to program the drum rhythms. Help. I have plenty of amps and guitars but need some technology for backing.