My oddest request was ' This was my mothers accordian. I'll lend you this, and If you can play me a tune on it next time I see you ( a regular 8 week pub booking) you can have the accordian'. I don't actually play keyboards - but difficult to resist a challenge. I learnt ' the Roseville fair ' in C - not too many notes or jumps up and down.
When we were next there the gent wasn't. We did the song anyway on his mothers accordian - which was fairly aged and just about in tune but nicely painted with canal boat type decorations.
A few weeks later I read in the local paper the pub was having a memorial do for him so I ended up with the accordian anyway.
FloraG.