Rock was born ten year before 1964...
... ant it was not the always highly overrated Beatles and Rolling stones to introduce it (especially the Beatles with their lame ye-ye sound). They were not a music revolution, but a 'behavioral' one. They understood that looking like idiots, and acting like idiots, would have paid much more than their music in years when young people wanted to 'feel different' and break with the 'old ways'.
From a musical point of view, other artists were much more innovative than the easy sound of Beatles (moreover, usually badly performed), and the repetitive sound of Rolling Stones. But on stage, they were the 'revolutionaries' people looked for regardless of the music. Perfect 'products' for the times. The same 'game' will be repeated often in the following years with other singers and groups...