Dean thinks he's heard it somewhere? Maybe in the Impala one time with Dad, or in the motel when they turned the radio on.

"I feel so extraordinary," he starts, raspy and untrained. "Something's got a hold of me. I've got this feeling I'm in motion, a sudden sense of liberty." He moves his head with the music, thinking back. He closes his eyes first but opens one to check, yes, these are the lyrics? "I don't care cause I'm not there and I don't care if I'm here tomorrow... Again and again," he sings, getting into it, his eyes falling closed again. "I've taken too much of the things that costs you too much. I used to think that the day would never..."

Come? Something. Something.

"... Light. In the shade of the sun."