In that film, he sang a song with Shirley Ross called "Thanks for the Memory."

VOA: special.2009.03.09

Participants receive a CD of their performance, "so they can go home with a dream memory of the song they made, " Mr. Bing said.

WSJ: Fol Chen Reveals Its Faces | By Jim Fusilli

In a symbiotic program that should potentially benefit studios, consumers, and perhaps even the medium itself, Apple hooked up with HD Radio developer iBiquity to integrate a "Tag" button into future hardware releases, which when triggered loads metadata about the current song to memory for future transfer to a docked iPod.

ENGADGET: HD Radio rolls out iTunes tagging

Other factors are in play: a caught phrase, a chord change, a memory of the singer (or the video), or a memory of a time when the song was playing.

BBC: James Blunt is the top choice for funerals