Described as "a freakish Halloween party", Led Zeppelin celebrate the UK launch of their Swan Song record label at Chislehurst Caves in Kent. Strippers, magicians, fire-eaters entertained guests which included: Roy Harper, label mates Bad Company and The Pretty Things, along with an assortment of press.

The invitation read:

"Do what thou wilt...
 But know by this summons
 That on the night of the full moon
 of 31st October, 1974

 Led Zeppelin

 request your presence
 at a
 Halloween Party
 to celebrate
 Swan Song Records'
 first UK album release
 'Silk Torpedo'
 by

 The Pretty Things

 in
 Chislehurst Caves,
 Chislehurst, Kent.

Celebrations will commence
 at 8:00 pm