An Chóisir Cheoil was a set of ten small pamphlets edited by Ó Tuama and published by An Claisceadal Cois Life. I have a copy of one of the set (No. 7) in a 1962 reprint (no mention of the original date).

They consist of sets of songs in Irish with musical notation - both staff and tonic solfa. Probably intended for schools? In the copy I have, some - but not all - songs have brief notes by O Tuama on sources, where known. In this instance, there is nothing to suggest he wrote any of them.

Regards