"The Love Bug (Theme Song)" also known as "Herbie's Theme" is a musical score written by George Bruns that has been used throughout most of the Herbie Films.
In the films
The song made its debut in the 1969 film The Love Bug which was played during the racing sequences and during the closing credits.
The song was reused again in the film Herbie Rides Again, during Herbie's high-speed driving and in his dream sequence. It is also heard in the closing credits.
The song was only heard twice in Herbie Goes to Monte Carlo when Herbie goes after a beautiful 1976 Lancia named Giselle and when Herbie is driving on the tunnel ceiling at the end of the big race near the end of the film.
A few variations of the song are used throughout Herbie Goes Bananas, notably when Herbie charges at Mr. Prindle and Quinn who try to capture Paco who was hiding under his hood, a slower and more pensive variation Herbie is being dumped into the ocean and when Herbie is chasing the biplane in the climax of the film. The theme's tune was slightly changed for this film.
In the 2005 film Herbie: Fully Loaded the theme song was used again but in the original classic tone that was used for The Love Bug. It is played when Maggie drives Herbie the first time and he immediately takes off when she puts the key in the ignition.