Audio Splitter ProWhat are stems? A simple explanation
If you have ever heard a producer talk about "pulling up the stems", you may have wondered what they meant. Stems are the building blocks of a finished song, and they are easier to understand than they sound.
A stem is a group of sounds
When a song is recorded, there can be dozens of individual tracks: kick, snare, hi-hats, bass, several guitars, keyboards, lead vocal, harmonies. Mixing all of them gives the song you hear. A stem is a smaller bundle of those tracks mixed together, such as "all the drums" or "all the vocals". Most songs are delivered as four stems.
The four common stems
- Vocals: the lead singer and usually the backing vocals.
- Drums: kick, snare, cymbals and percussion.
- Bass: the bass guitar or synth bass.
- Other: everything else, such as guitars, piano, strings and synthesisers.
Stems versus multitracks
A multitrack is the full set of original recordings. A stem is a combination of them. Multitracks give the most control but are huge, and are rarely shared. Stems are small enough to share and still let you change the balance of a song.
Why people want stems
- Musicians mute their own instrument and play along with the rest of the band.
- Singers practise with a backing track and no lead voice.
- DJs and producers make remixes and mashups, with permission from the rights holders.
- Teachers and students isolate the bass line or the drum pattern to study it.
- Listeners are curious and want to hear what each part is doing.
Where do stems come from now?
Artists rarely release them, but AI separation models can estimate them from a finished stereo song. They are not identical to the studio stems, though for practice, study and creative play they are often more than good enough.
Try it
Pick a song you know well, split it and listen to each stem alone. Hearing the bass or the drums without anything else is one of the fastest ways to understand how a song works.