Artist's commentary
Umamusume Manga: "Karaoke Session to Celebrate the Release of the Canopus Solo CD"
Refers to the "Winning Live 13" CD released on September 5th, 2023. In it, Twin Turbo, Ikuno Dictus, and Matikane Tannhauser all have solo songs.
https://umapyoi.net/music/winning-live-13