One of the only times you see four of the Beagle Boys working together. Usually it is only three of them together and occasionally Ma Beagle is with them.
The title is a reference to "Beatlemania," which was the term for the excitement caused by the introduction of the Beatles and their music to America.
Among the bands or musicians referenced in this episode (either with having someone mention their name or by their likeness appearing in the episode) include The Beatles, Elvis, Frank Sinatra, Cyndi Lauper, Madonna, Elton John, Bruce Springsteen and Michael Jackson.
Disgraceland is a reference to Elvis Presley's home, Graceland.
"Rolling Duck" is a reference to Rolling Stones magazine, a musical review periodical.