I made a microphone protective box.

I garbaged picked a metal tool box that is tall rather than long. It is sort of a file folder sized box. I used the foam packing from my latest Macintosh computer and cut some holes in a few layers of foam and made a microphone box. Usually microphone boxes are done with softer black spongy foam. I used the white styrofoam. It worked. I cleaned up the foam. I only have three microphones and one of them is in terrible physical shape and another is almost 20 years old.

Library books are helpful for learning music.

Here are the music books I am borrowing at present:

Jungleib, Stanley. Generl Midi (Madison, WI: A-R Editions, 1995).

This seems to be a book about MIDI written about the time sound cards became popular. I remember trying to buy a sound card for my IBM XT in the middle 1990's.

Rothstein, Joseph. MIDI: A Comprehensive Introduction (Madison, WI: A-R Editions, 1992).

This book I have read the first chapter and will continue reading it even if it seems MIDI is more for keyboard players.

Brice, Richard. Music Engineering: The Electronics of Playing and Recording (Oxford: Newness, 1998).

I have read a few chapters of this book now. It is highly educational and I have learned a lot from it and discussed music waves with my dad who is an experimental physicist.