Take The Who's "Won't Get Fooled Again" from 1971. Now break it down, separating out the tracks instrument by instrument, and you get some insight into how rock 'n roll anthems come together. Above, we have Keith Moon's driving drum track. Then Pete Townshend playing the power chords on guitar (plus some synthesizer); John Entwistle thumping out the bass; and Roger Daltrey on vocals. Put them back together and the whole becomes greater than the sum of the parts.