"Marc and I were talking about Spider-Man, and as the word got out, so many of our friends and musicians started calling us up, wanting to be a part of it, because they love Spider-Man.
"That was the thing that united all of us - the great love for Spider-Man. With all of these hugely talented people wanting to join us, it was Marc who said,'Why not start a band?' Marc and I have had a great start jamming with everybody, and we still have a few surprises up our sleeve," Zimmer said in a statement.
Zimmer is a nine-time Oscar nominee and winner for his work on 'The Lion King'. He has composed the scores for more than 100 films including 'The Pirates of the Caribbean' series, 'The Dark Knight' trilogy, 'Inception', '12 Years a Slave', 'Man of Steel' and 'Gladiator'.
Williams, a three-time Grammy winner, has previously composed songs and the score for the hit animated films 'Despicable Me' and 'Despicable Me 2'.