[CM] midi msgs

[Phil Sobolik]

I want to send program change msgs to my Yamaha P-60 in CM.  The P-60 does 
this with a combination of a program change msgs and a bank select/control 
change msg.  Is there a (make-control-change ...)?  Are the (make-...) midi 
msg constructors documented anywhere?  The dictionary doesn't seem to 
mention them.  Chapter 21 of Notes From the Metalevel mentions a few of 
them, but not in detail.

Phil Sobolik