I had no luck with 2 Yamaha keyboards. But maybe I'm just a moron. They output some strange stuff. Others may have good experiences. I have no issue with my Roland Keyboard, I play thru, and direct to the soundsystem, depending on the song.

As far as entering anything, it's WAY easier to do that by hand using the notation screens than I ever had it work on it's own. And percussion, um not in Band in a Box, unless you want to record to the soloist and disable the drums section. The RealDrums and midi drums, depending on your sound sources are better than you can do on your own, with the CAVEAT, that if you are trying to replicate Phil Collins doing the drumming, you have the wrong software in band in a box, it is meant as a backup band that flexes, and doesn't bend, but covers, well you can get the feel, the genre, and the idea, but to replicate something, it's easier to program midi from the get go and forget Band in a box.

John Conley
Musica est vita