Official Sound Edit
|YouTube||higllus||10,001,105 (Max)||Finger taps|
|YouTube||Ritxman||10,001,077||Fingernail taps (background noise)|
|YouTube||BengaleeHS||10,001,037||None (Thumb play)|
|YouTube||レイ||-||Hand clap video|
- Singularity was composed specifically for Arcaea.
- Originally Memory Forest was planned to be the only song ETIA. contributed, but ETIA. was concerned it was too shallow, and composed another catchy song. The Arcaea team liked it and ended up using them both.
- The note designer's name is likely an alias of Toaster. 東 can be read "tou," and 星 is "star." The コラプサー in 東星※コラプサー means "collapser," which relates to a collapsed star turning into a black hole (a singularity).
- The artwork of Singularity and Memory Forest form a complete picture when combined.