They used to perform at Moe's Tavern but then started to perform at Springfield State Prison and the First Church of Springfield in 1985. This then caught the eyes of a man named Nigel. He then suggested they should be a real band and should remove Chief Wiggum because he reminded too much of the Village People. After a failed tryout The Be Sharps heard Barney Gumble's good singing and decided to have him join the band. They then had a concert at The Statue of Liberty and won a Grammy Award. Afterwards they became unpopular, with Barney dating a Japanese conceptual artist, and split up. In their latest act they sang "Baby on Board" on top of Moe's roof.
The Be Sharps also had various products. One was a foam squirter that got recalled because anyone who ate the foam would get poisoned and would die. Homer replied "Anyone who ate it deserved to die" at the same time which Bart was eating it. They also released two albums, one self-titled and the other titled Bigger Than Jesus. The self-titled was seen at the flea market in the beginning of the episode catching Bart's eye and igniting the plot for the episode.The Be-Sharps black and white album
The Be Sharps are an obvious parody of The Beatles. One of their albums is titled "Bigger than Jesus", a reference to a quote by Beatles member John Lennon, who described their band as "bigger than Jesus".
The name Be Sharps is a play-on-words on The Beatles (Be Dulls). As sharp being the opposite of dull.
Here are some allusions and references:
Four members compose The Be Sharps, like The Beatles
There is one former member who was kicked out for not being as good as the others. (Pete Best and Chief Wiggum)
Both bands have at least one stage name (Ringo Starr was born Richard Starkey, Apu Nahasapeemapetilon is . Apu DeBeaumarchais)
Both groups perform on the rooftop of a building at the end of their careers.
Barney's Japanese girlfriend is a parody of Yoko Ono.