It started with an Eric Clapton guitar (a Fender Lead II, for the gearheads in the audience). The beginning of something that nobody even knew was beginning.

Today there are more than 70,000 guitars, drums, pianos, harmonicas, microphones, shirts, pants, scarves, shoes, handwritten lyrics, cars, bikes, a bus and assorted rock memorabilia - by far, the largest, most valuable such collection in the world - on the walls of over 138 Hard Rock Cafes, Hotels and Casinos in 42 countries around the world.

But it all started with the one.