After Crusade, Mayall's discography gets weird.
His next record was called The Blues Alone, and it's an odd duck.
It features, Keef Hartley on drums, and other than Keef, every part on the record is played by Mr. Mayall himself (and Keef is really barely there.)
The Blues Alone is good, very good, but not great. It's let down by the fact that there is no spontinaity to it. It's all multi-tracked, it's a very Studio record.
That's what happens when one dude does everything, though. and to have done that kind of bedroom pop thing in 1967 is impressive.
(But the thing people remember Mayall for is his collaborators, and they ain't here.)