The baritone can serve functions that the alto and tenor cannot, in orchestral voicing

I've appeared on some other people's albums.

Miles Davis is one who writes songs when he plays.

Only the French, I guess, really use tenor and alto to any great extent in the orchestra

Now, the instrumentation in the jazz band and the jazz dance band has gone through many evolutions. For instance, in the 'twenties the tradition was two or three saxophones

The recording industry has changed; they're enjoying such incredible success in the pop field

What I came back to is that jazz is a music to be played and not to be intellectualized on.