In late 1936 Aleister Crowley recorded a few tracks on 78 rpm. On this site you can download a zip file with the following 11 of those recordings in mp3 audio format:

The Call of the First Aethyr (Enochian version), The Call of the Second Aethyr (Enochian version), The Call of the Second Aethyr (English version), La Gitana, The Pentagram, The Poet, At Sea, The Titanic, Hymn to the American People, Excerpts from the Gnostic Mass, Vive La French Republic