How to earn money with music without teaching or performing?

[Bob]

Be a philosopher who only thinks about music.

Philosophy + music...  I'm thinking that has to be one of the least practical things to do out there.  I was going to say add teaching to that, but you can make money teaching. 

[quantum]

There is alot of writing that has been done on philosophy + music.  You get to read this kind of stuff in musicology studies.

[richard black]

More pianists than any other kind of musician earn money without teaching or performing - they're rehearsal pianists for opera, dance, college students (though in that job you inevitably end up doing some sort-of performing at least, if only in front of the rest of the student's class), singers' coaches, and so on. I do all right at it and it's enjoyable work.

[m19834]

ooopsies