Hi Tobe, good idea! Based on some excellent advice I soldiered 3 wires to the top of the Music Shield so it can pass through to Arduino. (That was in my notes too 
The problem now is how to use some of pins D0-D9 for other things.
I’m using 0 and 1 for Serial. The Music Shield either doesn’t play, or plays then volumes all the way down, when pins 2-5 are connected to switches. This even happens when I bend out the pins of the Proto Shield so they don’t go into Arduino.
How do I use these pins for other parts of my project?
Thanks!
Mike