Free Open Source MIDI Composer, Recorder and Editor

PianoRollComposer is a free, open source, compact, rich featured and highly customizable MIDI( Musical Instrument Digital Interface ) player, synthesizer, recorder, creator and editor.

Free Open Source MIDI Composer, Recorder and Editor


  • Create new MIDI music from scratch or open and edit existing MIDI file.
  • 6 note type: Whole, Half, Quarter, Eighth, Sixteenth, Thirty-second.
  • Add, edit, move, delete notes.
  • Support simulating 128 instruments and 61 percussion instruments including Piano, Bright Piano, Electric Piano, Honky Tonk Piano, Electric Piano 1, Electric Piano 2, Harpsichord, Clavinet, Celesta, Glockenspiel, Music Box, Vibraphone, Marimb, Xylophone, Tubular Bells, Dulcimer, Drawbar Organ, Percussive Organ, Rock Organ, Church Organ, Reed Organ, Accordian, Harmonica, Tango Accordian, Nylon A, oustic Guitar, Steel Acoustic Guitar, Jazz Electric Guitar, Clean Electric Guitar, Muted Electric Guitar, Overdrive Guitar, Distorted Guitar, Harmonica Guitar, Acoustic , ass, Electric Fingered Bass, Electric Picked Bass, Fretless Bass, Slap Bass 1, Slap Bass 2, Syn Bass 1, Syn Bass 2, Violin, Viola, Cello, Contrabass, Tremolo String, Pizzicato Strings, Orchestral Harp, Timpani, String Ensemble 1, String Ensemble 2 (Slow), Syn Strings 1, Syn Strings 2, Choir Aahs, Voice Ohs, Syn Choir, Orchestr, l Hit, Trumpet, Trombone, Tuba, Muted Trumpet, French Horn, Brass Section, Syn Brass 1, Syn Brass 2, Soprano Sax, Alto Sax, Tenor Sax, Baritone Sax, Oboe, English Horn, Bassoon, Clarinet, Piccolo, Flute, Recorder, Pan Flute, Bottle Blow, Shakuhachi, Whistle, Ocarina, Syn Square Wave, Syn Sawtooth Wave, Syn Calliope, Syn Chiff, Syn Chrang, Syn Voice, Syn Fifths Sawtooth Wave, Syn Brass & Lead, New Age Syn Pad, Warm Syn Pad, Polysynth Syn Pad, Choir Syn Pad, Bowed Syn Pa, Metal Syn Pad, Halo Syn Pad, Sweep Syn Pad, SFX Rain, SFX Soundtrack, SFX Crystal, SFX Atmosphere, SFX Brightness, SFX Goblins, SFX Echoes, SFX Sci-F, Sitar, Banjo, Shamisen, Koto, Kalimba, Bag Pipe, Fiddle, Shanai, Tinkle Bell, Agogo, Steel Drum, Woodblock, Taiko Drum, Melodic Tom, Syn Drum, Reverse Cymbal, Guitar Fret Noise, Breath Noise, Seashore, Bird Tweet, Telephone Ring, Helicopter, Applause, Gun Shot, none, etc.
  • Record from MIDI instruments or microphone.
  • Record/Convert MIDI to WAV format.
  • Support a great number of keyboard shortcuts.
  • Tweak the volume and tempo.
  • Plus many more.

PianoRollComposer works on all Windows OSes.

PianoRollComposer is a 171KB download available from the developer’s website.

Comments are closed.