Some MIDI questions

[Peter Teeson]

My lead sheet is done and now I want to work on the instruments.

So my first question is 
#1 How to I stop the lyrics from appearing in the MIDI file?

Ain't Misbehavin v4.ly
Description: Binary data

Also
#2 How do I set the MIDI channel to use - in this case for the vibraphone?

(This is because I have an old Roland Sound Canvas that I will be using for my 
project.)
(The project is aiming at reproducing my jazz trio of vibes, electric guitar 
and acoustic bass - from 55 years ago - wow is it really that long!!)

Thanks for your help….

Peter