I have the Ascension 45 somewhere. Also the ESP Ayler/Ornette 45, an ICP 45 included with an ICP/DIW LP, and some Savoy and Prestige 45s. I rarely play them - see them mostly as curiosities, though perhaps I shouldn't. Edit - didn't read the entire subject title - missed "Free Jazz" - ignore the mention of Savoy and Prestige.