Hey, Royce. Good to see you again.Compare your bank numbers with those in Eric Bayer's p2k_All.ins. Some of yours agree with his; others don't. His file contains the instrument definitions for Cakewalk software, but the bank switching values can be found at the end. I don't have all those roms, but the one I have are correct, so I assume all of his are correct.Also, I started a table. I was hoping to get other identifying info from people, but never got enough to revise the table. Its here in a TEMP folder (in the Files section). Not sure if you want to compile the other info I started to collect (including check sum numbers!), but if you want, I can find the xlsx file I used to make the pdf. Let me know.I am sure in my syxer program I have the ROM IDs defined and could get those to you if you want, but with Eric Bayer's bank numbers, you can just take the zero bank number and divide by 128 to get the MSB. For example:Patch[8448]=E-MU P2k: Advanced Orchestra: Bank 0 (8448) 8448 / 128 = 66I thought p2k_All.ins was here, but I found it quicker in the p2k group.Steve