福宿音屋魂音泉 (Fuku Yadoru Otoya Tamaonsen) is an original maimai track by the long-running doujin music circle 魂音泉 (Tamaonsen). It marks Tamaonsen's first original composition commissioned specifically for the maimai series, prior appearances such as 天狗の落とし文 feat. ｙｔｒ and アマノジャクリバース feat. ｙｔｒ were Touhou arrangement tracks ported from CHUNITHM. Composed and arranged by Coro (the core member of Tamaonsen), the song carries the in-game genre label "SUPER SPA RAP", reflecting the circle's signature style of fast-paced, lyrically dense rap over energetic beats at 162 BPM. The song was introduced during the maimai DX era on October 18, 2019, initially as an unlockable track within the Dragon chou (ドラゴンちほー) area before receiving a general unlock on September 17, 2020 alongside the Splash version update. The title itself is a playful construction: 福宿音屋 (Fuku Yadoru Otoya, roughly "blessed lodging sound-house") leads into 魂音泉 (Tamaonsen), effectively branding the song as a self-titled statement from the circle. On the chart side, the MASTER difficulty (level 13, constant 13.0) designed by 7.3Hz＋Jack stands out for its unusually dense Touch-note count, 191 Touch notes out of 871 total, a remarkable concentration for a level-13 chart. Combined with 96 Slide notes and 42 Break notes, the chart demands both spatial awareness and precise finger dexterity across the full touch panel. The EXPERT chart (level 10+, constant 10.6) by 小鳥遊さん serves as an approachable gateway to the song's rhythmic patterns for players working toward the upper difficulty tiers.