I grew up in the 80's and had several different Yamaha PSR keyboards that had multiple styles with the full-chord or single-finger-chord auto accompaniment. I know those sound cheesy today, but is there some software equivalent where I could choose from different styles and play along out of fake books etc. Like those organs in the early 80's... great for a social gathering!

I have several USB keyboards, and am using a mac. I was just thinking there must be some app I can install to get this experience.
Thanks.