Perpetual

Before joining Pump It Up, "Perpetual" lived in the mobile rhythm game Dynamix, where it ran as event content (the 127th event song) during the summer of 2019. It was written by Qu-ail, a Taiwanese composer, and is filed under the metal genre with a steady 180 BPM. In its original home it shipped without a BGA, and clearing the song let players unlock the character Wing & Claw along with a background through the game's gacha system.

The track first entered the series in Pump It Up M and was later ported to arcade cabinets with the Pump It Up PHOENIX 2.03 update, slotting into the World Music / PHOENIX channel with visuals credited to YSJ. On PHOENIX it offers Single charts at S4, S7, S12, S16, S19 and S21, plus a Double spread running from D14 up to D24, giving everyone from beginners to advanced players something to dig into.

In Dynamix the song earned a reputation for punching above its weight: its Hard chart, rated level 8, was widely seen as far tougher than that number implied. Nagging side notes break up the flow throughout, and the closing stretch caps things off with a barrage of simultaneous hits that feels out of place for the listed difficulty. As a result the Hard chart was eventually bumped up to level 9, just as the easiest chart was raised from level 4 to 5.