Piano Solo - Level 5 - Digital Download SKU: A0.1298963 By Cheetah Mobile. By Cheetah Mobile. Arranged by Zellev. 21st Century,Contemporary,Disco,Video Game. Score. 5 pages. Zellev Music #888813. Published by Zellev Music (A0.1298963). Key Signature: NaturalTime Signature: 4/4Tempo: Molto vivaceDifficulty: AdvancedMassif, also known as â…  or Level 1, is the first level in the game. This level was part of the initial release of Rolling Sky on January 20, 2016. Despite Cloud being the first level in the arrangement order, this level is considered Level 1 since it was released first. It is a parallel level to Illusion, though some sources consider it as a bonus level of this level.