WRITTEN IN A MINOR·HOOK IN F LYDIAN·BRIDGE IN E PHRYGIAN·CHORUS IN C MAJOR·VERSE IN D DORIAN·PRE IN G MIXOLYDIAN·OUTRO IN B♭ LYDIAN·MODULATE TO E♭·TURNAROUND VI-IV-I-V·WRITTEN IN A MINOR·HOOK IN F LYDIAN·BRIDGE IN E PHRYGIAN·CHORUS IN C MAJOR·VERSE IN D DORIAN·PRE IN G MIXOLYDIAN·OUTRO IN B♭ LYDIAN·MODULATE TO E♭·TURNAROUND VI-IV-I-V
G Mixolydian · i VI III VII
NOW PLAYING/"open road"

Try a mood

FOR SONGWRITERS
WRITES LIKE YOU

Write

the song

in your head.

Hum a melody. Pick a mood. TerryTrilla finds the key — and the four chords that already fit underneath it. The blank page never wins.

No card · Cancel anytime

iGVIFIIICVIIG+

The notebook problem

Same hook. One side feels stuck.

BEFORE
  • ✕"Is this E minor or A minor again?"
  • ✕Same four chords, every song.
  • ✕Capo on 3 because the bridge is scary.
  • ✕Bridge written four hours later, still wrong.

Voice memos labelled "idea 47.m4a"

AFTER
  • ✓Sing two notes — we name the key.
  • ✓Four chords that fit. Four more if you want.
  • ✓Modulate without leaving the song.
  • ✓Bridge written in under ten minutes.

Demos labelled by the hook, not the date.

03Things the back of your notebook can't do.

01

Find your key by ear.

Hum into the mic. We listen, find the centre, and light up every chord that lives in that key. No theory degree.

🎤
listening · A minor
02

Borrow without breaking.

One tap and the parallel-minor chord lights up under your progression. Drag it in. The melody still works.

C majorIiiIVV
borrowiii°ivv
03

Lyric-aware playback.

Type the line, hit play, hear the chord under each syllable. Find the word that wants to land on the V.

AmFCG

she keeps the porchlight on for me

Writers, in their own hand.

Three of 14,200

"Wrote a bridge in seven minutes. My co-writer asked who I was and where I'd been."

debut EP · Tuesday
— Mia, 28 · Nashville

"The ear-trainer caught that my voice sits between D and E♭. Everything I wrote in C was a fight."

cantor · sound designer
— Hadi, 41 · Beirut

"I write on guitar but my songs live in the circle now. The bridge writes itself once I see it."

bedroom-pop · 6.2k monthly
— Pris, 19 · Lisbon
BORROW FROM PARALLEL·MODAL INTERCHANGE·SECONDARY DOMINANTS·PIVOT CHORDS·TRITONE SUB·PLAGAL CADENCE·BACKDOOR ii-V·NEAPOLITAN·ANDALUSIAN·PICARDY THIRD·BORROW FROM PARALLEL·MODAL INTERCHANGE·SECONDARY DOMINANTS·PIVOT CHORDS·TRITONE SUB·PLAGAL CADENCE·BACKDOOR ii-V·NEAPOLITAN·ANDALUSIAN·PICARDY THIRD

One plan. One price.

Less than a capo, more than a metronome.

$6/ month$12

Songwriter — billed yearly, no card today.

  • ✓Hum-to-key ear detection
  • ✓Every mode, every key, no upsell
  • ✓Lyric-aware chord playback
  • ✓MIDI · MusicXML · Logic · Ableton export
  • ✓Cloud-synced notebook across 3 devices
· 30 days on us
STILL HERE?

The next one is the one.

Open the notebook. Pick a mood. Hum one line. We'll handle the rest.

Start writing →
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Pick up where the chorus fell apart.

↗ Open last notebook
"Porchlight" · A minor · 2 days ago"Highway tape" · G Mixolydian · last week