The recording of Beloved Comrade on the CD Pasiones -- which was originally a musical revue I directed and consulted on research for in Chicago - is available through Amazon, downloadable, etc. You can order the CD from CD Baby. Here are notes from the song from the CD Baby Website: "Words: Lewis Allan Music: Fred Katz. Written in 1936 for those killed in Spain, frequently sung in memory of President Roosevelt. Josh White was asked to sing this song for President Roosevelt. Tom, the father of director Peter Glazer, was the first to perform this song in public." I may have sheet music somewhere. It was included on another album recorded by American volunteer Max Parker called "Al Tocar Diana," available through Smithsonian Folkways, where I notice you can download the song. I didn't include it in my book only because I focused on the songs Seeger, my father and Butch and Bess Hawes recorded, and the German recording "Six Songs For Democracy," though it is a powerful song for sure.