Production music libraries explained: how library deals work for composers

Every cooking video, true-crime podcast and regional news bulletin needs music, and almost none of it is commissioned. It comes from production music libraries: catalogues of tracks written to be licensed quickly, searched by mood and tempo, and dropped under picture by an editor on a deadline. For a composer, library music is one of the few ways to earn from music that nobody will ever add to a playlist.

This guide covers how that world works from the writer's side. If you want the wider picture of sync, including one-stop rights and fee negotiation for your artist releases, start with our sync licensing basics. This piece is about writing for libraries on purpose.

What counts as production music

Production music (also called library or stock music) is written in advance, without a specific scene in mind, so that a production can license it off the shelf. The buyer is usually an editor or producer, not a music supervisor with a budget, and they choose by searching words like "tense", "corporate, uplifting, 120 bpm" or "lo-fi, warm, no vocals".

That changes what a good track is. A song is judged by whether people want to hear it again. A library cue is judged by whether it sits under dialogue without fighting it, whether it can be cut to 30 seconds without sounding chopped, and whether its title and tags put it in front of the right editor.

How libraries make money, and how you do

Libraries earn in two broad ways: licence fees from productions, either per track or through blanket deals that cover a whole catalogue, and a publisher's share of the performance royalties when licensed music is broadcast or streamed.

You, as the writer, can earn from the same two pots: a share of the licence fee the library collects, and your writer's share of performance royalties, paid through your PRO. The CD Baby guide by attorney Jennifer Newman Sharpe says libraries typically keep "a percentage of the upfront licensing fee AND a percentage of the public performance royalties", and warns that with blanket licences "often the libraries don't pay the artists who own the songs any share". The guide dates from 2015, so read it as a description of the model and check every current contract for how blanket income is split.

Performance royalties only reach you if the production reports the use. For TV and film that report is the cue sheet. ASCAP explains cue sheets as the record of the music used in an audiovisual work, which it relies on to pay the writers and publishers. A placement with no cue sheet is a placement that pays you nothing beyond your share of the fee. Our guide to performing rights organisations covers registering as a writer.

Exclusive versus non-exclusive

This is the decision that shapes everything else.

Exclusive libraries take the sole right to license a track for sync. In return they tend to invest more in pitching, and, as the CD Baby guide puts it, can "secure higher synch licensing fees", because nobody else can offer the same cue. The cost is that you cannot place that track anywhere else, often for a long term.

Non-exclusive libraries let you put the same track in several catalogues or license it yourself. Some of them use retitling: registering your track with the PRO under a new title so their placements can be told apart from anybody else's. The guide says retitling "causes confusion for music supervisors, studios, and the performing rights organizations".

Where Content ID comes in

Non-exclusive deals have a second problem, which shows up on YouTube. YouTube's eligibility page lists "music or video that was licensed, but without exclusivity" among content that is not eligible for Content ID, and its overview says users of the system "must own exclusive rights to a substantial body of original material".

In practice, if the same recording sits in three libraries and one of them registers it for Content ID anyway, a YouTuber who licensed it legitimately from another library can be hit with a claim. That is bad for the customer and bad for your reputation as the writer. Before you sign, ask each library whether it registers tracks for Content ID or uses a partner that does, and never place a track that is fingerprinted by one library into another. Our Content ID guide explains how claims and disputes work.

Writing music a library can use

These habits come up again and again in library briefs, and they cost little to adopt:

1. Front-load the mood. Editors audition the first few seconds. Make the track's character clear immediately rather than after a long intro.
2. Leave room for voices. Keep busy melodies out of the dialogue range in underscore cues, or deliver a version without the lead.
3. Deliver alternate versions. A full mix, an underscore without the lead, a 60-second and 30-second cut, and a short sting. Each version gives an editor another reason to pick the track.
4. Write clean endings. A proper button ending is easier to cut than a fade.
5. Clear everything inside it. No uncleared samples, and check that every loop or sample pack licence allows use in music you license onward. Our sample clearance basics covers what to look for.
6. Get the metadata right. Accurate titles, writer splits, PRO details and descriptive tags are how a library sells your track and how you get paid. See our guide to metadata, ISRCs and split sheets.

Questions to ask before signing

• Is the deal exclusive, and for how long? Can you get a track back if it is never licensed?
• What share of licence fees and blanket income do you receive, and how often are you paid?
• Does the library take a publisher share, and does it retitle?
• Does it register tracks for Content ID?
• Does the contract allow your music to be used to train AI models, or licensed to others who do?

That last question matters more each month. Tools that generate a score to fit a video, such as the one we covered in our news on ElevenLabs' Instant Soundtracks, compete directly with library cues for the cheapest end of the market.

What we think

Most advice treats library music as the poor cousin of "real" sync: lower fees, less glamour, music by the yard. We think that framing is backwards for anyone starting out now. The low-budget end of library work is exactly the part AI generation is eating, so the composers who last will be the ones whose catalogue is clean, exclusive and traceable: one title per recording, one registered owner, stems on file. That is the opposite of the old volume strategy of spraying the same track across a dozen non-exclusive catalogues.

So our advice is to write fewer, more specific cues, place them with fewer libraries on exclusive terms where the library genuinely pitches, and treat your metadata as part of the composition. A generated cue can be produced in seconds. What it cannot easily offer a cautious production is a person who wrote it and a clear record of who owns it.