Besides being the entity that communicated AL (Liber Legis) The Book of the Law sub figura XXXI, Aiwass is currently a one man band from Phoenix, AZ creating: Psychedelic blues and ominous doom through the bloodshot eyes of Aleister Crowley,” according to his Bandcamp page: https://aiwassband.bandcamp.com/. His page always promises the imminent release of his first full length album on vinyl, Wayward Gods. Elsewhere his music is described as “Death Metal.”
Here’s a stream of the “His Name Was Aiwass” EP: https://www.youtube.com/watch?v=ndEIn10nyDE.
Checking Metal Archives, “Aiwass” is a pretty popular band name in Metal circles and there’s at least a half dozen they’ve documented:
And checking covers and shiz… always with the naked ladies, always with the goats…