Seems unlikely. While music may be beneficial to a collective, a collective would not be able exist without some form of communication. It appears that the gene

Seems unlikely. While music may be beneficial to a collective, a collective would not be able exist without some form of communication. It appears that the generation and appreciation of music relies on a number of genes that seem unlikely to have evolved purely for music. The selection pressure would almost certainly be stronger on very basic levels of communication before any higher levels of tribal organisation, if purely because they can't exist without the basic selection on communication.