RAC collection #4 is available after purchasing it through the app. There are 5 songs in this collection.
|Butterfly||Shi Kuang Lee & Pico||3||4||6||82|
|Wish upon a shooting star||SUi||2||5||8||128|
|They seem like blossoms yet ...||The AirCarrier||1||4||7||110|
- "RAC" refers to Rayark's Artist Collaboration, which is a competition where various external musicians can contribute their compositions.