"Hanadokei ~Party's on!~" (花時計 ～Party's on!～; Flower Clock ~Party's on!~) is a song recorded and released by Flower. It was released on March 4, 2015 as the opening song of Flower's second album Hanadokei.
- Washio Reina, Ichiki Kyoka
- Vocals (version 2016)
- Washio Reina
- Odake Masato
- Yoko Hiramatsu, Erik Lidbom
- Other Information
- Arrangement: Erik Lidbom (arranger), Daisuke Kawaguchi (vocal arrangement)
The song can be found on the following releases:
- Hanadokei (track #1)
- "Hitomi no Oku no Ginga (Milky Way) (version 2016, track #5 (Regular editions only))
- A 2016 version of the song was included on Flower's eleventh single "Hitomi no Oku no Ginga (Milky Way)", including only Washio Reina's vocals.