is currently in the Pawn Shop for 400 CSC. There's also an unlimited quantity of it for sale for 600 CSC in 's CW shop.
I wouldn't mind seeing Music Shop retirements replaced with a selection of the kinds of items you're suggesting here.

and I came up with more world instruments Subeta needed a while back.
Some I'd really like to see Simsimiyya Dizi/Bamboo Flute Pipa Suona Quqin Pungi Shehnai Taiko Drum Street Organ Sitar Biwa
I just really want a bassoon (as a bassoonist myself).
Also, other missing woodwinds: english horn, saxophones in sizes (soprano, alto, baritone) besides tenor (which is what the generic saxophone item is), bass clarinet (and alto clarinet, but that's an infrequently used instrument), piccolo.
Other fun music goodies for woodwinds (like the rosin/strings for the string instruments): Neck strap (could be made in different colors and be wearable), reeds, instrument swab, cork grease, cases... Brass instruments use valve oil, mouthpieces, and all sorts of drumsticks and the like for percussionists.
A lot of regular concert instruments that are not the most basic sort are missing, including a lot of concert percussion, like timpani. Or brass instruments like a mellophone, flugelhorn, and sousaphone (missing sousaphone is a tragedy). Concert black attire could also be implemented if people want more wearable stuff from the music shop. Or choir robes. And marching uniforms (You know a marching band shako would look great)
There's just a very string bias that I see, and there's a lot that could be added for other instrument families.