Happy Miku Day!!
For me I think my favourite Miku songs are Cat's Dining Table (by Kikuo) and I'm a Ghost Type (by syudou), but some other ones I like too are The Disappearance of Hatsune Miku (by cosMo-Bousou-P, specifically the Mikunopolis live version) Rolling Girl and Two-Faced Lovers (both by wowaka), Sand Planet / DUNE (by hachi), and Identity (by Kanaria, I think Gumi's in this one too)
'Cause other Vocaloids/UTAUs got brought up too, here's some cool non-Miku songs:
- Override by Yoshida Yasei (ft. Teto SV)
- phony by Tsumiki (but specifically takaokamizuki's Teto SV cover)
- The Slyscraper by NILFRUITS (ft. Flower)
- Hi Φ Club by NILFRUITS (ft. Flower, warning for cult themes)
- Traffic Jam by NILFRUITS (ft. Flower)
- Liar Dancer by masarada (ft. Teto SV)
- Ultra Trailer by masarada (ft. Teto SV)
Note that all of these but phony and Override have flashing lights in their MVs, so if you're sensitive to that maybe try listening on Spotify or something instead