Music editing, the assembly, recombination, processing and pre-mixing of all music elements in postproduction, is both a gateway profession for those wishing to compose and an alternative career path for those who opt for a more stable occupation that is nonetheless at the heart of the craft. The music editor is the composer’s most valuable ally and is present throughout the entire scoring and re-recording (dubbing) process. Music supervision encompasses the entire range of content needed to satisfy a project’s music needs, from clearing and licensing pre-existing songs for use in the project to serving as an executive music producer and recommending and securing a composer for the score. Music supervisors often come onboard with editors and have taken on many of the functions once performed by studio executives.