Here are the questions I’ve been asked so far:
Is the music (either sheet music or a recording) available as well? Will it be?
Short answer: no. I can’t find anyone with the skill and the time to do it.
Long answer: eventually. If you start at the Index of Songs and Recordings and add what you can, you’ll help to make it happen!
Why don’t you have [name of song] in here?
In general, either because nobody suggested it before, or because I didn’t think it would work. Email me to suggest it and I’ll either throw it in the next revision or else tell you why not so you can try to argue me around.