What Is a Stem in Music?

A stem is a grouped submix of a recording, such as all the drums, all the vocals or all the strings, exported as a single audio file. Delivering music as stems lets editors rebalance, shorten or rework a piece without returning to the full session, making it the standard currency of adaptable audio.

Stem in Practice

Stems power modern remix culture: when Radiohead released the official stems of Nude and Reckoner in 2008, thousands of fans built their own versions, a landmark moment that showed how splitting a track into parts multiplies what can be done with it. Brand music runs on the same logic. A sonic branding agency delivers campaign music as stems so that a thirty-second cut for television, a six-second bumper, a voiceover-friendly mix with the lead melody removed, and territory-specific versions can all be produced quickly and consistently. Typical stem groups are drums, bass, harmony, lead and vocals. Asking for stems in the contract is one of the simplest ways a brand protects the future flexibility of its music.