A one of a kind gem in the doujin sphere, Japanese circle A-One almost singlehandedly holds up their niche of Touhou-themed Eurobeat music. Starting out in 2008 with over 40 albums since then, the 4-person group has since collaborated with some of the scene's most popular vocalists like Hanatan, ayaponzu*, Nanahira, and a bunch more to create their limitless blood-pumping and bass-pounding pieces. Given the impressive and unique arrangement behind each of their songs, it's no wonder they've been a constant staple in the Touhou music scene.
Harking back to the early 2010's, A-One's archetypal sound has always resonated with osu! players thanks to a series of ever-popular maps by Frostmourne, including Bloody Night, Day Breaker, Bamboo Dance, and Magic Girl !!, all focusing on vocalist Shihori. With a collection of songs both new and old featuring a massive array of vocalists, anyone fond of Touhou, Eurobeat, or straight up hype can find a home with each of these works.