My musical diet had been missing noise and muscle, so for the last week I’ve kept my satellite radio dialed to the Underground Garage. Since then, the Beatles have begun showing up regularly. Their music was playing at classic car show that Luke and I attended this morning, and subsequently we listened to them all morning. The abrupt start to this song, which Paul McCartney said was inspired by Little Richard, gave Luke and me a startle. “I wasn’t expecting that,” he said.