play-along software

I'm a bassist interested in making it easier for people to record live music, songwrite and improve on music. I was thinking to make an app that would do the following: Being able to save quick clips and multi track on top of each other easily, using VIDEO and AUDIO. Not just audio. Being...

I've collected a few arrangements of tunes in compound meters and I'm thinking about the next step, creating play-alongs for bandmates to practice along with and ran into a problem. Ordinarily, I'd use iRealPro or Band-in-a-Box to create play-alongs because neither my piano or drumming are up...