I had a sudden and mighty need for a Fiddle for my pets, only to discover there's nothing more than a mere Fiddlette for "If you want something a little smaller than a fiddle".

to this i say FIDDLESTICKS

Other missing instruments I can think of off the top of my head include the organ (we only have the Spooky Pipe Organ), bugle horn, concertina, and of course the classic sousaphone (also it's not musical by default, but I'd love a washboard). I have a number of music-playing pets who sorely are missing some of these.

If anyone has any additional ones, please add them here! ^^

A big ol' contrabassoon! XD I'll admit my whole thought process was, "Hmm, what's the weirdest instrument I would use in an HA.. OMG what is that ginormous oboe thing??" Then I Googled "big oboe," "bass oboe," saw a result that said "bassoon" so I searched "big bassoon," then found EXACTLY what I was looking for.

photos of random ppl next to contrabassoons

The Music Shop could do with some more items; as well as instruments I'd also like to see more audio recording items such as cables and different types of microphones and maybe also software, but they might be more suited for Bits and Bytes (which could also use some new items). We also only have one amplifier item and I forgot the rarity but it's quite expensive.