A [[hair_ornament|hair ornament]] in the shape of a musical [[instrument]].
h5. Examples
* The [[yuki_miku_(2020)|2020 version]] of [[yuki_miku|Yuki Miku]] has a [[french_horn|french horn]] [[hairpin]] (post #3613248, post #5738933)
* Certain outfits of [[kagamine_rin|Kagamine Rin]] feature a [[trumpet]]-themed [[hairpin]] (post #6029615)
instrument hair ornament