.C67 File Extension

Composer 670 Module

Developer Renaissance
2.0  |  1 Vote

What is a C67 file?

A C67 file is an audio module created by Composer 670 (aka CDFM), a music tracker for MS-DOS. It contains note patterns (likely divided among multiple audio channels) and sound samples used to emulate various instruments. While Composer 670 is obsolete, some modern music trackers can still open C67 files.

More Information

Screenshot of a .c67 file in OpenMPT
C67 file open in OpenMPT

Composer 670 was a music tracker developed and most famously used by the demo group Renaissance, to create music for the video games Zone 66 and Amnesia. It was based on and combined features of the Composer 667 and Composer 669 music trackers.

Audio modules created using Composer 670 are saved as C67 files. Each C67 file can consist of up to 13 audio channels (4 sample channels and 9 FM channels). It also stores the instrument audio samples used to play the song it contains.

How to open a C67 file

You can open a C67 file with OpenMPT (Windows) or Vitamin/CAIG ZXTune (multiplatform). In OpenMPT, you can play, edit, and convert the song a C67 file contains. In Vitamin/CAIG ZXTune, you can play the song a C67 file contains.

While you can also open a C67 file with Composer 670, note that you'll likely have to run the program in an MS-DOS emulator, such as DosBox.

How to convert a C67 file

You can use OpenMPT to convert C67 files to the following formats:

  • .S3M - ScreamTracker 3 Module
  • .MID - MIDI File
  • .WAV - WAVE Audio File
  • .FLAC - Free Lossless Audio Codec File
  • .AU - Audacity Audio File
  • .OPUS - Opus Audio File
  • .OGG - Ogg Vorbis Audio File
  • .RAW - Raw Audio Data
  • .MP3 - MP3 Audio File
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Programs that open C67 files

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