For fans threatened by the Stones' anti-Beatles image, Jagger doubled down on this sleazy rocker, scowling, "I can see that you're just 15 years old/No, I don't want your ID." (In concert, he even lowered the age to 13.) Richards stabbed his Telecaster in newly discovered open-G tuning he learned from Ry Cooder. "You get a drone going all the time," Richards wrote. The music's dark vibe has an appropriately droogy influence. "We pinched from the very first Velvet Underground album," Jagger said in 1977. "You know, the sound on 'Heroin.' Honest to God, we did!"