Long before a composer writes a single note, a rough cut already has a soundtrack. Editors reach for music they have lying around, borrowed from other films, commercial recordings, or a studio library, and lay it under the picture so the assembly does not play in silence. This placeholder is the temp track, and it is one of the most quietly powerful documents in post-production. It is meant to be disposable. Often it is anything but. A director and a roomful of executives watch a cut for weeks with the temp underneath, and by the time a composer arrives the music has done its work on everyone in the room, including the people who will judge whatever the composer turns in.
Why Editors Reach for Temp
The practical case for a temp track is hard to argue with. A scene cut without music feels naked and slow, and test audiences punish silence in ways that have nothing to do with the eventual score. Music tells the editor where a sequence breathes, where it should accelerate, and whether a cut is landing emotionally or simply moving information around. Studio executives, who may see a film a dozen times in unfinished states, want to feel something when they watch, and a temp gives them that feeling on a schedule. So the editor pulls cues that fit the mood and tempo, and the cut starts to lean on them.
The trouble is that good temp is usually finished, polished, professionally recorded music that has already proven itself somewhere else. It was scored to a different film, mixed by a different team, and earned its emotional charge in a context the new project cannot inherit. A composer is then asked to compete with that, from scratch, on a deadline, with an orchestra that has not yet been booked. The reference is a fully built house. The brief is to build the same house faster and call it original.
The Temp Love Problem
Spend enough weeks with a temp track and the music stops feeling temporary. Editors call this temp love, and it is exactly what it sounds like. The director has watched a sequence rise on a particular swell of strings forty times, and now the scene and the music are fused in memory. When the composer delivers something genuinely new, it can feel wrong simply because it is unfamiliar, not because it is worse. The original is the imposter, the famous frustration goes, because the audience in the screening room has already bonded with the borrowed cue.
The temp is meant to be thrown away. By the time the composer arrives, everyone in the room has already fallen in love with it.
This puts the composer in a strange bind. Match the temp too closely and the work risks sounding derivative, or worse, draws legal scrutiny for resembling a copyrighted recording. Stray too far and the director hears only the absence of the music they fell for. The most experienced composers learn to interrogate the temp rather than copy it. They ask what the placeholder is actually doing, what emotional function it serves at that exact frame, and then they try to deliver that function in a voice that belongs to the film. The temp becomes a description of a feeling rather than a set of notes to reproduce.
The Spotting Session
All of this comes to a head in the spotting session, the meeting where the director, composer, music editor, and supervising sound team sit down with a near-final cut and decide exactly where music will play. They watch the picture in pieces, stopping to mark the precise frame where each cue begins and ends, what it should accomplish, and where music should pull back so dialogue or sound effects can carry the scene instead. These decisions are logged as cues with timings, and that list becomes the composer's map for the weeks of writing ahead.
The spotting session is also where the temp track is finally confronted out loud. The director points at a moment and says what the borrowed music was doing there, and the composer translates that intention into a plan that is theirs to write. Done well, the session frees the film from its placeholders and replaces a patchwork of other people's music with a single coherent score. Done poorly, it simply ratifies temp love and asks the composer to chase a ghost. Either way, the humble placeholder dropped into an early cut has shaped the conversation, the schedule, and the sound the audience will eventually hear, which is a remarkable amount of influence for something everyone agreed from the start was only temporary.