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Play a score

Just load a MusicXml score in Expresseur.

Expresseur computes a synthesis of the score.

Play the synthesis on your MIDI keyboard.

Add all your musical feeling.

Pianoteq & midiKeyboard

Connect a small Midi-keyboard 

A small keyboard with 25-key semi-weighted , like the Icon iKeyboard 3 nano  


Install a MIDI virtual cable 


Install Pianoteq

  • The best virtual Piano from Modartt
  • select the MIDI virtual cable as the only MIDI-input


Install Expresseur 

  • In the MIDI setup
    • select the MIDI keyboard as MIDI-input, 
    • select the MIDI virtual cable as MIDI-output
    • In the menu Edit / Mixer
    • Select the MIDI virtual cable device for all tracks
    • Open a MusicXML score in Expresseur 
      • example "a_la_claire_fontaine.txt"
      • exported from MuseScore 
      • downloaded from Internet

  • Play the Expresseur rythm staff on your keyboard

Connect an electronic piano

Connect an electronic MIDI piano on your computer :

  • USB cable (if piano is USB-Midi compliant )
  • MIDI/USB Adapator (if piano has only MIDI-ports)


Install Expresseur

  • select the MIDI piano cable as input and output


Open a MusicXML score in Expresseur

  • example "a_la_claire_fontaine.txt"
  • exported from MuseScore 
  • downloaded from Internet


Play the Expresseur rythm staff  on your keyboard


Other devices

Test sound-expanders to generate sounds


Use pedals, breath-controler, gesture controler : 

  • with autonomous MIDI pedals (or with pedal/MIDI adapter) : select pedal-MIDI-ouput in Pianoteq-Midi-in listener
  • with pedals managed by the MIDI-keyboard : configure MIDI-shortcuts in Expresseur, to send these pedal-events to MIDI-out


Add synchonized lighting

  • Connect DMX projectors to play lights sunchronize with the music.


Build new way to play music

  • Build your own device using Teensy. Do-It-Yourself any device to play music 
  • Build your own MIDI logic : learn LUA scripting in Expresseur


Learn all features

  • Read user's guide to discover all the possibilities of Expresseur


Improve interpretation

Listen to yourself 

Enhance your ability to grasp where the score is leading, where the composer aims to take you within their musical world; the sensitivity of the melody; the structure of the harmony, suspension, and resolution; the framework of the rhythm, swing, and rubato; ...


Pay attention to your surroundings 

When playing with other musicians or dancers, listen and observe each other to create a cohesive and authentic musical interpretation—your unique collective expression.


Adapt the score to your expectations 

Simplify, rearrange, or enhance the score itself (e.g., using MuseScore). Expresseur makes the interpretation easy but sometimes requires adjustments or rearrangements to make it even easier and more straightforward to play.

Select the staff you want to play  ( menu Edit / view-play ). For example, "doubling" the vocal on Expresseur can be useful during learning phase with the singer, but can be removed during the progression.


Enhance the Expresseur text description

Editing the text description on the left panel, using the menu Edit  / Edit :

    • Include repetitions: da capo, al segno, couplet, etc.  
    • Add decorations: automatic pedals, arpeggio, mordents, embellishments, ...


Build various ambiances

Take advantage of the full potential of modern sound rendering. Pianoteq offers incredible options for piano, harpsichord, vibraphone, harps, and even a full organ with Organteq. The world of digital sound rendering is limitless.

Each track can play its own instrument (e.g. in Organteq, or with MIDI-synthetizer), using menu Edit / mixer .

Control or improvise the color of the sound in real-time using a MIDI controller.

Enhance your performance with synchronized lighting effects using DMX projectors.


Enhance the reactivity

The full computer keyboard can be used for various shortcuts, such as mixer, tacet, dacapo, and more (refer to the Expresseur menu Setting / One-key config). 

Any MIDI event, like a piano key or controller, can trigger actions like direct note-thru, dacapo, mixer, or arpeggio (see the Expresseur menu Setting / MIDI-shortcut). 

Additionally, lists of scores can be created for specific events, such as lessons or concerts ( see the Epxresseur menu List ). 


Minimalist configuration

Expresseur can be played without additional software hadware, in a minimalist configuration :

    • In the Audio wizard : tune the parameters to have a correct sound with the Test button
    • In the menu Edit / Mixer : select "SF2_default_piano" for all tracks
    • Press the "space bar" on your computer keyboard to play the score


This configuration is not recommended :

  • direct SF2 sounds are difficult to tune to minimize the latency
  • computer keyboard avoid any possibility to add sensitivity