Answer:
are you kiding??? a hammond B-3 is THE world renowned organ that featured in addition to it's solid wood cabinet, dual stacked keborads and multiple stops, a cabinet speaker with the Leslie on top. That is the spinning horn in the top of the cabinet that gave it a distinctive sound. EVERYONE used it from church's to the rock bands of the 60's and 70's up through today. Take a look at the Allman Brothers pictures and see what they are playing...