Baby Blue” is a song recorded by the band Badfinger for inclusion on their 1971 album, Straight Up. The song was written by Pete Ham, produced by Todd Rundgren, and released on Apple Records. It regained fame four decades later upon being featured in the series finale of AMC‘s Breaking Bad, which uses the tracks title lyric as a reference to the special and iconic blue methamphetamine produced by main character Walter White.

Ham wrote the song about a woman named Dixie Armstrong, whom he had dated during Badfinger’s last US tour