I all depends on the song, I have a few keyboards and modules..Most of the songs were using either a fully expanded Roland XP30 and a JV2080 as well as a Korg N5ex and a Yamaha Psr 540. All songs were recorded as midi into Cakewalk 9 or later into Sonar. Tracks were then re-recorded through a mixer as seperate audio tracks and then mixed. I'm also using Soundforge for wave editing and mastering. I also have been an using M-Audio delta 66 soundcard, Tanoy Reveal Monitors all running through a Behringer Mixer.