When I purchased my (Roland) auto-arranger keyboard, I went crazy downloading, borrowing, seeking out alternative patterns/dance styles. I ended up with probably about 600 that I stored on the computer. Do you know how many I've used on the job for the last 10 years. About a dozen! Why? Because I discovered no one even notices... on the job. Nowadays you're lucky if they even notice your melody line! Still....I'm looking forward to the new Ketron as I'll play it for sheer enjoyment for myself. My audience wouldn't know if I showed up playing a washboard with chopsticks!