First, let me apologize in advance as this is probably a dumb question, and also for the fact that you might find this post on more than one forum since none seemed to fit exactly. I often see youtube vids etc with someone playing full backing tracks off an iPad or similar device, and playing to it, for performance (and practice I suppose). Also, obviously, I know there are ways and sources to find backing tracks for probably thousands of songs that can be utilized on a computer. And last, some people are able to write their own full backing tracks for original tunes for easy and convenient use for live performance. So, my questions are: 1) What is a good source for backing tracks for use in live performance, essentially in a solo context (but of course others can play along also). This would, I suppose, mainly mean standards, etc. 2) How are they conveniently played back/utilized in live performance? 3) What is a convenient, low-equipment-gear-load way to play back pre-written backing tracks (written at home on DP or Protools or basic sequencer etc)? My goals are 1) to be able to take basic arrangements of standards, and be able to solo over them (thus having a "bass player" to cover the low while I am all over the place) both live and at home for recording, practice, and general amusement; and 2) be able to write, sequence/record basic arrangements that I can then utilize at a gig without having to bring a keyboard with sequencer/workstation and a poopie-ton of peripheral gear for this purpose. Any help you can offer in bringing me into the 21st century on this kind of stuff will be greatly appreciated. Thanks in advance for the help of this great community of players we have here.