What I had asked about, and wanted to do, was somewhat different. I am not using any Sequences. I just wanted to have a MIDI command that sets the Tempo of the keyboard, (along with my MIDI commands that recall a specific Registration for me), so that when I start playing the song, the keyboard is a the tempo that I want.

The reason is that I have say ~500 registrations, for nearly 500 songs. I have recently started "Re-using" the Registrations, for songs other than the ones I originally created them for. The reason is that I have another ~700 songs that I play, for which I have no registration. Rather than create 700 more registrations, I thought that I could (in many cases) use an existing registration that is "close enough", but maybe I need to change to tempo a bit.

Specific example: I have a Registration for "All Of Me", and it's at tempo 120 (I think). I want to play song "Basin Street Blues" - but I have no Registration created for "Basic Street Blues". I found that my "All of Me" registration happens to work pretty well for "Basic Street Blues", but I want the tempo to be 110 instead of 120. So, when I call up "Basin Street Blues" on my iPad, I have my app (unrealBook) send the MIDI commands to call up the "All of Me" registration, then immediately change the tempo of the keyboard to 110. Then, I just play the song (no sequences, just playing it live).

Multiply this times several hundred more songs, and "Re-use" of Registrations seems quicker than creating hundreds more Registrations. Not true for ALL songs, but I find that 90% of the time, when I working with one of the ~700 songs for which I have no Registration, one of my existing ~500 Registrations can be found that works pretty well for a given song for which I have no registration.

Hope this helps explain why I wanted to change Tempo, outside of what MIDI clock does with sequences etc.

Jim