The name and logo of the record label in this movie, Playtone, became the name of Tom Hanks' production company.

Throughout the entire movie, no one ever says the bass player's name. Even in the credits, he is listed as T.B. Player and The Bass Player.

Another Beatles parallel in the film: There's a scene where you see the band members play on stage and Mr. White is watching them (while moving his head along with the music). There's a famous picture of Brian Epstein (Beatles' mythological manager) doing the exact same thing on The Beatles' famous Shea Stadium concert.

The ballad that appears on the flip side of their hit single (and which they play at Villapianos) is also being played by the band at the wedding reception in another Tom Hanks production, "My Big, Fat, Greek Wedding.

There are several Beatles parallels: The Beatles' first hit, "Please Please Me," was a speeded-up version of a slow ballad. On the Ed Sullivan show, a shot of John Lennon was accompanied by the caption, "Sorry Girls, He's Married." Also, lead singer Jimmy gets sick on the show as George Harrison did prior to their appearance.

Tom Hanks' wife, Rita Wilson and two of his kids, Colin and Elizabeth can be seen in the movie. Rita Wilson played Marguerite, the cocktail waitress in the jazz club, Colin was the page who escorted Liv Tyler and Elizabeth was the bored girl in the dress shop.

The kit which Guy Patterson uses on tour is the same Ludwig kit as Beatle Ringo Starr.

Two of the characters in this movie, Lenny Haise and James Mattingly, have the same last names as the characters from Tom Hanks' previous movie, Apollo 13; Fred Haise and Ken Mattingly.

The four actors of the band rehearsed for eight weeks as a band in order to improve their performing, but most of their performances were still dubbed by professional musicians.