This harpsichord-driven song was inspired by a rivalry between Love vocalist Arthur Lee and guitarist Bryan Maclean over a teenage girl named Stephanie Buffington. Drummer Michael Stuart-Ware recalled to Uncut magazine: "Arthur wrote Stephanie Knows Who all about how he, and not Bryan, had finally won the hand of the fair Stephanie. He told Elektra that Stephanie would not only be the first song on Da Capo, but it would also be a single. But then Stephanie went back with Bryan, so in the end, it was downright embarrassing for Arthur."
The single release was withdrawn, with "She Comes in Colors" replacing it under the same catalog number.
Stephanie Buffington also served as inspiration for parts of another Da Capo, track, "The Castle."