The Sopranos has a nearly perfect opening title sequence, featuring Tony Soprano driving through New Jersey, set to the song "Woke Up This Morning" by Alabama 3.
However, creator David Chase initially considered a different song, by Elvis Costello, which would have explicitly stated the show's themes, potentially ruining the series.
The Sopranos creator David Chase wanted a different song to introduce Tony.
In hindsight, the final song choice was a better fit for the show, making the alternate option a disastrous one.
Author's summary: The Sopranos almost had a disastrous main theme song.