The Third Man Theme after the film's premiere, and more than half a million copies of "The Third Man Theme" record were sold within weeks of the film's release. The tune was originally released in the U.K. in 1949, where it was known as "The Harry Lime Theme". Following its release in the U.S. in 1950 (see 1950 in music), "The Third Man Theme" spent 11 weeks at number one on "Billboard"'s U.S. Best Sellers in Stores chart, from April 29 to July 8. Its success led to a trend in releasing film theme music as singles. A guitar version by Guy Lombardo also
Godzilla (Main Theme) (Main Theme)" was re-used for the first time in "Terror of Mechagodzilla", the last Godzilla film of the Showa era. As the theme song was brought back in sequels, it was also altered to fit in with the tone of the film. When it was brought back in "Terror of Mechagodzilla", the main title from the film was mixed with the theme song. The only two songs on the "Terror of Mechagodzilla" soundtrack that have the "Godzilla Theme" mixed with the main titles are "The Appearance of Godzilla", "Godzilla vs. The Mega-Monster Tag-Team", and the "Main Title" itself. On the