Los Angeles formed the inspiration for two songs on Donovan's Sunshine Superman album: "The Trip" and this song. Whilst the former was titled after a LA club where Donovan had a residency, this tune was named after The Mama's and The Papa's singer Mama Cass.
A cover version was recorded by Jefferson Airplane for their 1968 live album Bless Its Pointed Head.
"The Night Chicago Died" was written and recorded by the British group Paper Lace. They talk about Al Capone in the song, but got a lot of details wrong - understandable since they wrote it based on gangster movies.
Until December 5, 1998, a song had to be issued as a single to make the Hot 100. Aaliyah's "Try Again" was the first tune to top the chart based on airplay alone, without any sales figures being included.