Only tangentially related .. my brain, which appears to be a left-brained model, tries very hard to convert numbers into melodies. Case in point, the church in which my chorus rehearses provided us with a storage room with a handle that's locked with a number combination. The secret number is 5164. How to remember that?

Trying to come up with a mnemonic (51 is 3x17, 64 is 2^6 .. hmm), my brain suggest the opening for 'Doe, a deer', which starts (I think) with the lyric, "When you know the notes to sing .. you can sing 'most anything". The first four notes are So, Do, La, Fa, aka 5, 1, 6, 4. Presto - a mnemonic!

Well, I thought it was cool.