Earlier in this thread there were a couple of recommendations for use of the Korg EC-5.

Quote: "EC5... five buttons? No controls. $100 http://www.musiciansbuy.com/KORG_EC5.html "

How would it be used with Yamaha keyboards? It doesn't appear to be a midi footswitch and I didn't think there were that many inputs available with the Tyros. If it will work I can think of several alternatives. . .