Solo To DuoJoin the waitlist

For choirs, ensembles and duets

A second voice for your melody

Load a tune and Solo To Duo writes a harmony part for it. Several versions to choose from, ready to sing, print or open in MuseScore.

Join the waitlist▶ Listen to the demo

Launching soon. Early access for people on the waitlist.

Try it on Greensleeves

One melody, many second voices. Change the settings, press play and listen. Switch while it plays to hear the difference. Every version here was written by Solo To Duo; in the app you get several for each setting and keep the one you like.

Style
Second voice
Rhythm
Ornaments

More freedom: suspensions and passing notes. The voices move together.

Loading the score…

Top staff: the melody. Below: the second voice, in orange. Chords play on a guitar.

How it works

  1. 1

    Load your melody

    A MusicXML or MIDI file, for example from MuseScore. No chords? Solo To Duo suggests them.

  2. 2

    Choose the settings

    Above or below the tune, which voice sings it, how simple or bold, what rhythm.

  3. 3

    Pick and combine

    Get several versions at once. Keep the best bars of each, and change any note by hand.

  4. 4

    Sing it

    Download the parts for MuseScore or print a PDF for your singers.

What it can do

  • Several versions of the second voice at once, to compare by ear
  • Written for real singers: soprano, alto, tenor or bass range
  • From simple thirds to a bold, independent line
  • Bach-style counterpoint: canon and imitation for three voices
  • A third and fourth voice: a simple bass and alto from the chords
  • Chords suggested when your melody has none; move the song to a comfortable key
  • Build your own voice from the best fragments and edit any note
  • Export to MuseScore (MusicXML) or print a PDF

Who it’s for

Choir and ensemble leaders

A singable harmony part in minutes, not evenings.

Singers and duets

Find a second voice to sing with a friend.

Teachers

Show how a harmony part works, and let students try their own.

Arrangers

A quick first draft to start from and make your own.

Be the first to try it

We’re getting ready to launch. Leave your email and we’ll write when Solo To Duo opens, with early access for the first people on the list.

Who are you?

We’ll use your email only to write to you about Solo To Duo. No spam, and you can ask us to remove it at any time. How we handle your data.

Questions

What files can I use?

MusicXML (.musicxml, .mxl) and MIDI. MuseScore, Sibelius, Finale and Dorico all export them.

Do I need to know harmony?

No. Choose a few simple settings and listen. If your melody has no chords, Solo To Duo suggests them, and you can change them.

Will there be a free version?

Yes. You can work with the built-in examples and with one melody of your own for free.

Are my melodies private?

Yes. Your melodies and the voices you make stay yours. We never publish or share them.

When does it launch?

Soon. Join the waitlist and we will write to you as soon as it opens.