However, it soon became clear to the founders of RAPM that the organization was outgrowing its role as an advisory body, and tensions grew between members.
By 1924, Shul'gin and Sergeev left the organization, believing the content being produced was either too simplistic, or too inaccessible to actual workers.
[2] Close to RAPM's ideology was the organization "Prokoll" (Production Collective of Students of the Moscow Conservatory), created in the mid-1920s, which included, in particular, composers Alexander Davidenko, Viktor Bely, Boris Shekhter, and later also Dmitry Kabalevsky and Aram Khachaturian.
A typical example of this might be a choir singing in complete unison, with very little polyphonic variance: the unity of the singers would emphasize the notion of solidarity while the style would be reminiscent of folk music for the sake of accessibility.
[3] On 23 April 1932 it was disbanded, together with other unions, such as Russian Association of Proletarian Writers, by the Decree on the Reformation of Literary and Artistic Organizations.