SYSKEY is a Turbo C++ program which makes about 784 Cakewalk SYSEX messages for the Roland GS/SCXXX sound cards. The SYSEXES change the key for a certain channel. The best use of this is for changing the key of the drum tracks, so you can "tune up" drums, or key them way down for heavy, distorted sounds.
An executable and source code are included in the .zip. To run the executable, simply run it! It will then go about making all 784 files. Each file is 11 bytes long. If you don't want all of the files, simply edit the loop in the Source code to step through the loop more than once at a time. (i.e., instead of i++, i=i+2, or whatever.)