I believe this album came out in 1968. The drummer on this album, Carl Palmer, is the same Palmer who went on to form Emerson, Lake, and Palmer a year or so later. ELP also covered "Fire" on one of their box sets, though I have yet to hear that version.
Not to take anything away from Arthur Brown himself - he was an amazing singer - but most of the music on this album was written by keyboardist Vincent Crane, a guy who might have been able to play circles around Keith Emerson. After the personnel behind this album went their separate ways, Crane went on to form another great band, Atomic Rooster.
"The Crazy World of Arthur Brown" was known for its hit single "Fire," which has been covered by many, many bands since 1968. It is often lumped in with all the other psychedelic albums of the era, though Arthur Brown and his Crazy World were probably the most British of the bunch. A lot of what Jethro Tull and David Bowie got famous for can be traced, in part, back to this album. Even Iron Maiden's Bruce Dickinson, whose vocal style resembles Arthur Brown, has mentioned his fondness for this album.
My favorite track on this one has got to be "Spontaneous Apple Creation," simply because it's the weirdest song on one of the weirdest and most inspired albums of all time. This album is truly classic.