Song Connections / Remixes
- Heartstrings is Serph's third album.
- luck is not keysounded.
- Instead of displaying its character's portrait, luck displays its jacket on the songwheel.
- Despite being a licensed song, luck was not included in the TV/J-POP category in pop'n music peace until November 7th, 2018.
Song Production Information
Difficulty & Notecounts
|Notecounts / Long pop-kun||96 / 2||223 / 4||530 / 8||899 / 10||176||311|
|pop'n music peace→Present||5||21||31||42||11||18|