I believe what you want to do is become familiar with the midi capabilities in your keyboards.

1. Hooking up the midi connections correctly using in's, out's and throughs should allow you to chain the two keyboards and assuming the software is set up correctly (INS file) the software will recognize each of them.

2. Once you figure out this you simply sequence the song, set your midi output to the correct keyboard and patch and then save. Everytime you open that song it should bring up those settings.

3. If I am understanding you right there may be times where you sequence a song using one or the other of the keyboards or both and then want to just take one keyboard with you to do a live service. You have a couple of choices here. You can sequence the song and set it up three different times. 1. both keyboards, 2. Yamaha, 3. Korg. You could just save the songs with the keyboard name on them. If you do not want to do this and just want to sequence and have a similiar sound no matter which keyboard you use then you always want to use General Midi (GM) patches. They won't sound exactly the same due to differnt programming of the sounds in the keyboard but it will be close.

Power Tracks will definitely do what you want from this perspective. Don't overlook some of Cakewalk's lighter versions as well. They are not real expensive and have pretty good support forums. If you are making use of BIAB or Realtracks then PT is the easiest since they will all open each others files normally.

Hope this helps. If I have mistated something maybe some of the more keyboard/midi savy folks can correct. me.

Terry

TerryB

Windows 10, Dell 8700 XPS i7, 12MB Ram.