Transcribe a bass line from a song
You can solo the bass in any recording and hear every note, slide and ghost note that the guitars and kick drum normally hide, then write it down bar by bar. StemConsole does it in the browser with no install: upload the song, run the free four-stem split, solo the bass stem and start transcribing.
The bass stem is free and the first split needs no account. Pitch-locked slow-down, octave shift and named loops are Pro.
How to transcribe a bass line
- 1
Upload the song
Drop an MP3, WAV, FLAC or M4A (up to 200MB) at stemconsole.ai. The first split needs no account.
- 2
Run Quick Split
The free split gives vocals, drums, bass and other. Solo the bass and add a little drums to feel the beats.
- 3
Map the form and the roots
Note the bar count for each section, then the root at the start of each bar. That skeleton makes the detail easy.
- 4
Slow it down and loop it (Pro)
Set Speed to three-quarters with the pitch locked, loop two bars at a time and write the rhythm first, then the pitches. Use half speed for fast fills only.
- 5
Check the hard notes
Shift Pitch up 12 semitones (Pro) to hear low notes an octave higher, where the pitch is much clearer.
- 6
Play it with the band
Mute the bass stem and play your transcription with the real drums and guitars. Save the session with its loops.
Transcription tips for bass
Rhythm first, always. Write each bar as rhythm slashes before you touch the pitches. Most bass lines repeat with small variations, so bar one gives you most of the verse.
Solve the octave problem with pitch shift. Low notes are hard to name by ear because the fundamental is felt as much as heard. Shifting the soloed stem up an octave (Pro) puts the line where every note is obvious, with the rhythm unchanged.
Use the kick as a grid. Bass and kick are usually locked, so if a note seems to float, check whether it sits on a kick hit or just after. Listen for slides and ghost notes slightly slowed, not at half speed, where a slide can sound like two notes.
The blog post on learning basslines by ear covers the broader solo, learn, mute, play method; this page is about getting the notes onto paper accurately.
What to expect
Bass separates cleanly on most recordings. In dense mixes, sub-bass and kick share the same frequencies and a little of each can appear in the other stem, which is why bass with a touch of drums is often clearer than bass alone.
What is free and what is Pro
| Free | Pro | |
|---|---|---|
| Stems | Vocal Remover and 4-stem Quick Split | 6-stem Full Separation (adds guitar and piano) |
| Slow down | No | 50% to 150%, pitch locked |
| Change key | No | Yes, 12 semitones either way |
| Looping | One A/B loop (free account) | Named loops, count-in, tap tempo |
| Downloads | MP3 stems and MP3 mix bounces | WAV stems and bounces, including at a changed speed or key |
| Splits | 5 a month (2 multi-stem); first needs no account | 100 a month, then 15 a day |
Pro is US$6.99 a month or US$49 a year. A US$1.99 credit buys one Full Separation, no practice tools, never expires. See plans.
Frequently asked questions
Is the bass stem free?
Yes. Quick Split is free and gives vocals, drums, bass and other, with 5 splits a month and no account for the first one.
Can I slow the bass down without changing the pitch?
Yes, with Pro, from 50% to 150%. Free accounts play at the original speed and key.
Does it work with MP3 files?
Yes. MP3, WAV, FLAC, M4A, OGG and AAC up to 200MB. Low-bitrate MP3s lose low-end detail, so use the best copy you can find.
Can I save the soloed bass to listen to later?
Yes. Free accounts download the bass stem as MP3 or bounce the soloed mix to MP3. Pro adds WAV and bounces that include your speed and pitch.
Is it free?
Splitting and soloing the bass are free. Pitch-locked slow-down, pitch shift and named loops are Pro at US$6.99 a month or US$49 a year.
Does it work on a phone?
Yes, in the mobile browser with nothing to install. Use headphones; phone speakers cannot reproduce bass.
Compared with Transcribe!, YouTube and Moises
| Transcribe! | YouTube | Moises | StemConsole | |
|---|---|---|---|---|
| Isolate the bass | EQ boost only | No | Yes, stems | Yes, free 4-stem split |
| Slow in the original key | Yes | Yes, in 0.25x steps | Yes, Premium plan | Yes (Pro) |
| Shift up an octave | Yes | No | Yes, Premium plan | Yes (Pro) |
| Loop a bar | Yes, precise | No | Yes, Premium plan | Yes |
| Cost | One-off licence | Free | Premium subscription; price shown after login | Free split; Pro US$6.99 a month |
Related guides and tools
How to learn any bassline by ear
From the blog: the method. Solo the bass, learn it phrase by phrase, then play with the band.
Isolate bass
Solo the bassline to learn it, or mute it and play along.
Learn a song by ear
Solo the part, slow it down, loop the phrase.
Slow down a song without changing pitch
Learn fast passages at a comfortable speed without changing the key (Pro).
Loop a section of a song
Repeat a phrase until it sits under your fingers. Basic looping is free; named loops need Pro.
Drumless tracks for drum practice
Mute the drums and play along with the real band.
Written by Dan Murtagh, mixing engineer and audio educator. Updated 13 September 2026.