Contractor - A contractor works with the composer for a film or television project to hire the musicians who will play on the recording sessions. The contractor also interfaces with the A F of M (Musicians Union) when appropriate to ensure that the proper paperwork and forms are completed and filed for union recording sessions. A good contractor also knows how to hire skilled, professional musicians, how to work with the musicians to ensure that the composer's needs are met, and knows how to hire musicians who work well together. The contractor is usually hired or designated by the composer. In England, a contractor is known as a "fixer."

Music Editor - The Music Editor works with the composer and production company to organize, document, and time the music cues for a project. The Music Editor works very closely with the composer during the early phases of a production to document the decisions of the director and composer about the placement, timing, length, and type of music to be used throughout a project. The Music Editor is usually present during the recording sessions to document each cue as it is recorded, and may be responsible for generating the click that is often used to keep the timings of the performance precise (see click). The Music Editor is also present at the dubbing or prelay sessions where the recorded music is inserted into the film at the correct time code locations.

Music Supervisor - Is an executive who manages the licensing of music for a film or television production. The Music Supervisor handles music clearance and rights licensing of existing music, and also may be involved with supervising the score composer. Choosing appropriate music, especially Source Cues and Songs is usually the responsibility of the Music Supervisor.

Scoring Engineer (or Scoring Mixer) - The person who records, mixes (adjusts levels, effects, and tone), and has overall responsibility for microphone placement and recording the musicians at a recording session. Also known as a Recording Engineer.

Theatrical Trailer - the official theatrical preview piece, usually cut from the first (very long) cut of the picture or sometimes (if there is no first cut yet) from dailies (all the shot footage, including all the different takes and angles), maximum length of a trailer is two and a half minutes.
Teaser Trailer - A first, short theatrical preview piece (usually not longer than a minute and a half), cut from a few selected takes and scenes while the picture is still being shot.

TV Spots - Are 15, 30 and (for a few very "big-budgeted" projects usually for a special event such as the Super Bowl) 60 seconds in length. They usually don't have much to do with the theatrical trailer and are produced completely separate from the theatrical campaign. They are very "focus group specific" and, in most cases, uses music different from the theatrical trailer.

International Release - Sometimes trailers are altered for a specific locality or because of rights issues in a certain region, those special cases appear under this category.

Re-issue - Music that has appeared on re-issues of certain features when re-released theatrically

Home Video Trailer - A seperately produced trailer used to advertise new home video releases or movies coming soon or in theaters right now. They are produced by the home video departments the studios and usually have a much smaller budget than the theatrical trailers.

DVD Trailer - These trailers are usually the same as the regular theatrical trailer, but because of the deluxe format of DVD, may actually contain alternate and rejected trailers for any specific promotional campaign. Sometimes TV spots are included and fall under the same circumstances.

Internet trailer - These trailers are usually created exclusively for the internet, and might contain music not used in the theatrical release versions.

Other - For some reason some of these bits of music appear on an odd bit of film, and are so categorized.
 
Rushes - Refers to the raw, unedited footage shot during the making of a motion picture.