
Harmonauta: Music Maker
Chords & Harmony from Feeling
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Free
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About
Harmonauta is a music maker for songwriters that starts where songs actually start: with a feeling.
Instead of scales, wheels and chord tables, you get a living galaxy of sixteen emotions. Tap Longing, add a little Joy, pull Serenity closer, and the Core hums the key it hears. Forge it, and Harmonauta lays out a chord progression that carries that feeling: the right mode, the right movement, the right extensions, voiced and played back so you can judge it by ear.
Then keep shaping.
FORGE A TONE
• Blend up to four emotions and weight them by dragging them toward the Core
• Progressions built from a library of emotional archetypes across seven modes
• Depth control: Pure triads, Rich sevenths, or Lush ninths and colour tones
• Feel control: hold, pulse, strum, picked or piano comping, plus tempo and key
• Genre: Pop, Rock, Hip-hop, R&B, Electronic, Folk, Jazz, Lo-fi, Bossa nova, MPB, Reggae or Blues, or let the feeling decide
• A melody line written over your chords, shown as a piano roll, rerollable
• Reroll for another take on the same feeling
HEAR IT PROPERLY
• Ten instruments (pad, glass keys, pluck, electric piano, nylon guitar, crunch guitar, organ, bells, strings, flute) and three basses
• Drums with sixteen grooves, from a soft pulse and bossa to boom bap, swing, samba, one drop, four on the floor and a blues shuffle
• Bass lines that play a real part: a pedal under calm, lush chords, root and fifth, octaves when it gets loud, a walking line through the key; genres bring their own, from a blues boogie to samba and bossa
• Five spaces from dry to cathedral and plate
• Binaural beat for headphones: a quiet tone in each ear around the key note, pulsing in time with the song
• The screen stays awake while anything is playing
• Auto picks all of it from the feeling or the genre; override anything in the Sound sheet
RESHAPE ANY CHORD
• Shards: smart substitutions for every chord, from relative minors and mediants to secondary dominants, tritone subs and borrowed colour
• Change chord lengths, add and remove chords
• See the guitar shape for every chord, with alternatives one tap away
GROW IT INTO A SONG
• The Journey builds an intro, verse, pre-chorus, chorus, bridge and outro from your seed
• Tint any section with a different feeling and Harmonauta rewrites its harmony to match
• Reorder, duplicate, repeat and regenerate sections
• Play the whole arrangement end to end; the trail scrolls itself to the section being played
TAKE IT WITH YOU
• Guitar sheet PDF: chord diagrams above every bar, fingerings, barres, positions
• MIDI export for any tone or full song with chord, bass line, melody and drum tracks, ready for your DAW
• Copy a chord sheet as text
• A library that remembers every tone and song with its mood
Harmonauta is built for songwriters, composers, producers and anyone who has a feeling before they have a chord. It runs entirely on your device, with no account and no internet required.
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What's New in Harmonauta
1.5
October 2, 2026
A new name, and something for your headphones. • Harmonaut is now Harmonauta. Same app, same library: your tones and songs are right where you left them • Binaural beat: a new switch at the foot of the Sound sheet. A quiet tone in each ear, tuned around the key note and a few hertz apart, so a slow pulse forms between your ears at the speed of the sixteenth notes • It needs headphones and stays silent on the speaker • Switch it on for a tone and the song you build from it carries it through every section • A headphones mark on the tone and on the song shows when it is on
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