Tom Hanks named his production company Playtone after the fictional "Play-Tone Records" in the film.
Additionally, on the soundtrack CD, there are songs by fictional stars The Vicksburgs, The Heardsmen, and Del Paxton, all of whom were mentioned in the movie but never actually shown performing.
As part of the promo tie-in, many radio stations at the time placed the title track on regular rotation, crediting the song just as they would for an actual band. Some stations are still doing this many years later.
Real-Life Relative: Tom Hanks' wife plays the waitress at the jazz club. His son Colin plays an usher.