Ifukube had been an admirer of
Maurice Ravel, and introduced a melody reminiscent of a
motif from Ravel's
Piano Concerto in G major in his
Arctic Forest (1945) and
Rapsodia Concertante for Violin and Orchestra (1948). This subsequently became a basis for ''Godzilla's Theme''. The sheet music "M1" or which is the actual motif of ''Godzilla's Theme'', was originally intended to be associated with the
Japanese Self Defense Forces featured in the film, it became the thematic
leitmotif for the monster character
Godzilla and the entire franchise. The original theme song of the monster was "MA" or , alternatively as , which was used for Godzilla's assault on
Shinagawa in the 1954 film, and was recurringly used in the franchise. The theme first appeared on the original
Godzilla film and in later sequels was replaced by a new theme titled the
Godzilla March. The
Godzilla (Main Theme) was re-used (as a theme song for the kaiju itself) for the first time in
Terror of Mechagodzilla (1975), the final Godzilla film featuring the Showa era's continuity within the franchise. Ifukube participated in
Godzilla vs. King Ghidorah (1991), and the "M1" has become a theme song for the character thereafter, while the "MA" wasn't used until
Godzilla vs. Mechagodzilla II. Ifukube had utilized motives identical to the "M1" and "MA" for scenes to involve gigantic objects and crowds in several non-Godzilla films, such as
The President and a Female Clerk (1948) by
Shochiku,
City of the Spider (1950) by
Daiei Film,
Sakuma Dam (1954), a documentary film by
Iwanami Productions for the
eponymous dam,
Castle of Flames (1960) by
Toei Company,
Chūshingura: Hana no Maki, Yuki no Maki (1962) by Toho, '''' (1964) by
Shaw Brothers Studio and Shin Films, and so on. == Alterations ==