Yeah, same tune, different renditions.
https://www.youtube.com/watch?v=891XuTSjqaMThis is the LP I had:
Interesting that the video shows stills from the color 1963 pilot!“I Dream of Jennie” had a different theme song for the first season.
Many shows from the 1960’s had to re-shoot their opening themes when they made the transition from black & white to color, but the theme song remained the same (Beverly Hillbillies, Gomer Pyle USMC, and others).
Castle has a few versions of the theme song that are different for special episodes, like Christmas or the flashback episode.
If you can actually count that 7 second music piece as the Official Theme Song.
Diagnosis Murder had one theme for its first couple seasons and another for the rest of the run.
All in the Family had a slightly different rendition of its theme somewhere along the run where they sang the line “Gee our old LaSalle ran great” very much more distinctly.
Will & Grace had at least two different versions of the solo piano opening theme. I think one was about 7 seconds long.
Never heard this one before:
Frasier had about 25 different opening “themelets.”
In addition to the “Mirror Universe” episode theme switch mentioned upthread, ST:E changed its theme from the straight ballady version of “Faith of the Heart” to one with more instrumentation for season 4 I think.
The Leave It to Beaver theme changed from season to season, finally becoming hip in the episodes where he was a teenager (or almost one).
Bosom Buddies theme only changed when USA ran it for some reason. Other channels (local and cable) showing it in syndication kept the regular theme. USA did this with some other shows, I think. I wanna say the GI Joe cartoon was one.
They also had both a short and long version that they switched between depending (I assume) on whether the episode was running long or short.
The lyrics completely changed between season 1 and 2. The tune was the same, though.
Also they rerecorded the regular theme for season 3 (and kept that version for the rest of the run other than the special eps).
Episodes from the critically acclaimed and highly sought-after* first season of Scooby Doo, Where Are You? can be distinguished by the opening credits theme, which was re-recorded for the second season. The first season version contains the line, “And that’s a fact!”
And as if that wasn’t thrilling enough – the first two episodes of the first season have an entirely different, instrumental opening credits theme!
*Humor
The original Hawaii Five-0 had about six different versions of its theme song over 12 seasons. Same tune, just different recordings and slightly different arrangements each time.
The syndicated episodes won’t be much help, but Emergency had three different opening themes: incidental music under “calls”; the popular theme; slightly more jazzed up version of the popular theme. Man, that simulated siren was annoying.
South Park, but the only part that changed was Kenny’s indecipherable lines (which are, if you care to look them up, completely filthy). There have apparently been three versions of his part of the opening theme.
Close. The change was the last line, from, “You might just make it after all.” to “You’re gonna make it after all.”
Squidbillies has at least [del]2[/del] 4 different theme songs, originally performed by Billy Joe Shaver which have been performed by a dizzying array of artists.
Scrubs changed the brief clip of the song “Superman” it played at the beginning of each episode at one point. They slowed and strected it out.
Actually, the first half of the lyrics were completely different as well:
