Answers, and a breath
Not a track that just plays. The band listens and answers.
- Fills come back after your phrase
- Dynamics from pp to ff move with how hard you play
Feelism
A jazz app that hears your solo and answers
The feel of a session,
at home.
Sax, piano, or bass. Plug in, and Feelism plays every part but yours, hears you, and improvises a reply. The app follows your dynamics. Swing, and also bossa and Latin feels.
Practice tunes stay free. Six standards are free to play. About 90 more jazz standards are planned for early November 2026. The added pack is $4.99 per month.
Screen
Read the chart. Play with the band.
Pick a tune and a feel, then press Play. When your solo builds, the band hears it.
Features
The band hears you, and answers.
The band changes gear
As the energy rises, the accompaniment changes shape.
- Two-feel and walking four
- Brushes and other kit changes
- Automatic double-time when the solo gets dense
You and the band in one mix
Headphones bring you and the band back together. You can feel the immersion of a session.
Delay kept to a minimum
So your sound and the band do not sound out of sync, audio is processed only inside the app.
Record the session
Save a WAV. Choose the mix, your return, or the band alone.
Any instrument
Sax and trumpet, and also guitar, voice, or a MIDI keyboard. Pitch is read from the audio interface.
The chart in your key
B♭ or E♭ horn, you do not transpose in your head. You can also move the whole tune by semitone, and start a key you usually avoid.
Change the meter and the feel
From 4/4 through odd meters. Swing, bossa, afro, cha-cha, baião, and other feels are chosen apart from the meter.
The tune is MusicXML
The chord chart is MusicXML. You can import one without paying, but playback needs a paid plan.
One minute
See what it does.
A one-minute look at the screen. Playing the video connects to YouTube.
Setup
The gear, and where the sound goes.
You play. The sound goes through an audio interface into Feelism on the PC. The band and your own sound come back in the headphones.
How to start
Three steps to the first note.
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1
Pick a tune and your chair
On Find a tune, choose by title, genre, or feel. When you pick your part, the rest of the band takes the other chairs.
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2
Connect an audio interface
Instrument into the input, headphones into the output. Mixing your sound back in the app is on by default. Turn it off if the delay bothers you. Per-instrument steps are in the manual.
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3
Start from the count
The band counts you in. As you build, the band hears it, and the volume and the fills move with you.
Pricing
Practice forms and six standards are free. Add tunes monthly.
Practice tunes (free)
$0
- 80 practice forms, including blues, rhythm changes, and II–V–I
- Six standards: Doxy, Well You Needn't, Old Devil Moon, Someday My Prince Will Come, Take Five, On Green Dolphin Street
- Import MusicXML (playback needs the monthly plan)
Tune pack (monthly)
$4.99/ month
Pay with Stripe inside the app. Subscribe only after you agree to the terms.
- Extra jazz standards (about 90 tunes, planned for early November 2026) and playback of Forum tunes
- Paste the license key in Settings
- No email account inside the app
Contact
Questions, bugs, and press.
We reply to the address you enter. License-key reissue is here too. How we handle personal information is in the privacy policy. Using the app, including free practice, and a paid plan are covered by the terms.