The iconic soundtrack to Peanuts is breezy, Latin-inspired jazz. This is the story of how musician and composer Vince Guaraldi came to make it. One of the most iconic songs of the 60s was not sung by a dynamic, charismatic singer like Aretha Franklin or Mick Jagger. There was no breathtaking guitar solo by the likes of Jimi Hendrix or Eric Clapton. It was not composed by Burt Bacharach or arranged by Johnny Mercer. The best-known visuals associated with the song, in fact, were a cartoon adolescent playing it on a toy piano, a crabby girl hanging out with him,...