GNMIDI - MIDI Tools for Windows

GNMIDI is a Karaoke MIDI song player, converter and MIDI editor.
It inserts and synchronises lyrics and chords into MIDI and mp3 songs.
36 Euro (Professional license) or 20 Euro (Light license) (incl. vat)
differences between Professional and Light license
Windows software
MIDI player, editor, converter, MIDI/MP3 karaoke editor, helpful tools
Did you know that GNMIDI can

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PDF Documentation
View End user license agreement
try the software free for 14 days, the end user license agreement must be accepted at program start.
single user, installation on up to 5 of your computers, 2 years free updates, the end user license agreement must be accepted at program start.
Windows systems:
The program is tested with Windows 7 and Windows 8 and Windows 10. It is not guaranteed to work fully with other Windows systems.


-20% coupon code: CORONA2022 (also for GNMIDI bundle products and products GNMixer and GNMIDFMT and GNInsertController).
GNMIDI screenshot karaoke
Choose a melody MIDI channel with right mouse button to see the melody scores.

GNMIDI screenshot MIDI info  GNMIDI screenshot Mp3 info

GNMIDI screenshot with keyboard view


GNMIDI 3.32 released:
  • added: new operation find melody channel
  • added: new option loop between bars
  • added: more options to karaoke theme editor
  • added: import LRC file into lyric enter dialog
  • added: support time stamps [] at begin of an entered lyric line
  • improved: keep track names for format 1 input MIDI files after synchronising lyrics
  • improved: transporse chord names in operation shift notes
  • improved: allow user tool add to other menu than convert
  • fixed: chords above lyric line
  • fixed: split left and right hands failed in few cases
  • added: insert device name/port name or port number and prefix channel
  • product GNMixer: now uses compatible karaoke display
Custom batch operations
If you seek an operation specially for modifying your set of midi files please contact us. We can develop a batch application for your need so that you can safe much time doing it manually. GNMIDI 3 Professional contains a plugin concept to add new user operations to GNMIDI (without changing GNMIDI itself).