808.10 (F) Underlying Works Contained in Motion Picture Soundtracks
The soundtrack is an integral part of the motion picture and generally should be registered with the motion picture as a single, unified work. See Motion Picture Soundtracks, 40 Fed. Reg. 12,500, 12,501 (Mar. 19. 1975). However, a soundtrack may contain an underlying work, such as a musical composition or a script (inasmuch as the script is revealed in the spoken dialog) that is owned apart from the motion picture.
These topics are discussed in Sections 808.10 (G) (1) through 808.10 (G) (3).