In 1920, the Tatar ASSR was established and Kazan became its capital. In 1922, Musa, along with other Tatar poets, moved to Kazan. During this time, verses that he wrote include "The Red Host", "The Red Holyday", "The Red Hero", "The Red Way", "The Red Force", and "The Red Banner". In Kazan, Cälil worked as copyist for the "Qızıl Tatarstan" newspaper and studied at rabfak of the Oriental Pedagogical Institute. He became acquainted with Tatar poets such as Qawi Näcmi, Hadi Taqtaş, and Ğädel Qutuy. In 1924, he became a member of the literary society October, backing Proletkult. Since that year, his poetry departed from Ghisyanism and aruz and turned to the Tatar folk verse. His first collection of verses, "Barabız" ("We are going") was published in 1925. One concept that the verses dealt with was pre-revolutionary life.