A 'progressive' outfit Art later evolved into Spooky Tooth in October 1967 with the addition of Gary Wright. Their finest moment was What's That Sound, which was a rehash of Buffalo Springfield's superb For What It's Worth. It's now quite hard to obtain but was included on Island's You Can All Join In compilation.
Their album is adventurous and quite unique British psychedelic rock. It's quite primitive in places, but utilises a wide range of instruments with plenty of sound effects and variety, although side two is a bit nondescript. Guy Stevens handled the production duties. It's well worth a spin.