How did The Blues Brothers get their name?

The genesis of the Blues Brothers was a January 17, 1976, Saturday Night Live sketch. In it, "Howard Shore and his All-Bee Band" play the Slim Harpo song "I'm a King Bee," with Belushi singing and Aykroyd playing harmonica, dressed in the bee costumes they wore for the "Killer Bees" sketches.

Following tapings of SNL, it was popular among cast members and the weekly hosts to attend Aykroyd's Holland Tunnel Blues bar, which he had rented not long after joining the cast. Dan and John filled a jukebox with songs from many different artists such as Sam and Dave and punk band The Viletones. John bought an amplifier and they kept some musical instruments there for anyone who wanted to jam. It was here that Dan and Ron Gwynne wrote and developed the original story which Dan turned into the initial story draft of the Blues Brothers movie, better known as the "tome" because it contained so many pages. It was also at the bar that Aykroyd introduced Belushi to the blues. An interest soon became a fascination, and it was not long before the two began singing with local blues bands. Jokingly, SNL band leader Howard Shore suggested they call themselves "The Blues Brothers."