How big is the Roman Collosseum ?
His album credits include John Martyn 's " Grace and Danger " , Ralph McTell 's " Water of Dreams " , Iron Maiden 's eponymous album , Neil Ardley 's " Kaleidoscope of Rainbows " and " Harmony of the Spheres " , Collosseum II 's " Wardance " , Andrew Lloyd Webber 's " Variations " and " Requiem " , Gary Boyle 's " The Dancer " and " Electric Glide " and Barbara Thompson 's " Paraphernalia " .