Mousikos refers to those whose musical sound is named among voices no longer heard.

The single attested use places μουσικῶν among performers whose voices are said to be no longer heard.

1. Musical performers named among silenced voices · dominant

   In Revelation 18:22, the genitive plural masculine form μουσικῶν occurs in a list with harpists, flute players, and trumpeters, all within the statement that their voice will no longer be heard. The APB renders the clause "voice of harpists and musicians and flute players and trumpeters may not be heard in you still."

   Revelation 18:22

In the Anselm Project Bible: In Revelation 18:22, the APB includes "musicians" in a list of performers whose voice is no longer heard.