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Schism Tracker
General
Authormrpapersonic
TypeMusic Apps
Version20260524
LicenseGPL-2.0
Last Updated2026/05/24
Links
Download
Website
Source

Schism Tracker is a free and open-source reimplementation of Impulse Tracker, a program used to create high quality music without the requirements of specialized, expensive equipment, and with a unique "finger feel" that is difficult to replicate in part. The player is based on a highly modified version of the Modplug engine, with a number of bugfixes and changes to improve IT playback.

Where Impulse Tracker was limited to i386-based systems running MS-DOS, Schism Tracker runs on almost any platform that SDL 2 supports. Currently builds are provided for Linux, Mac OS X, and Windows. Most development is currently done on 64-bit Linux. Schism will most likely build on any architecture supported by GCC4 (e.g. alpha, m68k, arm, etc.) but it will probably not be as well-optimized on many systems.

See the wiki for more information.

Media

Schism Tracker Tutorial (Volt 44)

Known Issues

  • Saving over an existing file may sometimes fail.
  • USB disks may not be supported.
  • Stereo left/right orientation may be reversed in rare cases.
  • Performance/scanning can be slow with large SD cards.

Changelog

20260524

  • Happy new year!
  • Fixed a bunch of performance problems causing ridiculous amounts of CPU usage.
  • Fixed MIDI input when multithreading is enabled.
  • Fixed a nasty memory leak in the zlib decompressor.
  • Fixed import of boobiesqueezed XM files.
  • Fixed buffer overrun in 24-bit video scalers.
  • Fixed a possible race condition in the timer subsystem, which could result in a thread leak.
  • Fixed typing of / and \ on Spanish keyboards.
  • Fixed typing tab in the message editor.
  • Fixed incorrect writing of AIFF files.
  • Fixed copying of pattern data including instrument numbers higher than 99.
  • Better import of .mod notes (thanks @0x5742).
  • Properly ignore Zxx effects in NNA channels.
  • Show arrows in the corners of listboxes when there are more items beyond whats displayed.
  • Made the built-in FFT variable width (it will probably not work very well still if the buffer size is not a power of 2).
  • Switch cursor shape when leaving a page (thanks @hotgar#790).
  • Added "Hotdog Stand" and "Acid Gas" palettes.
  • Big endian ASIO formats now work.
  • Added SNES BRR sample loader.
  • Fixed Win95 support.
  • Fixed negative coordinate wraparound.
  • SDL 1.2 hardware video now uses OpenGL or hardware YUV overlays if available.
  • Fixed weirdness when combining sdl12-compat and sdl2-compat.
  • Removed OS/2 binary builds for now, they are hopelessly broken.
  • ASIO drivers can be loaded under Mac OS 9.
  • Detect AltiVec support on Mac OS 9.
  • Added OpenGL support to Mac OS 9 build. it's way too slow to be considered usable, though.
  • Honor gl_bilinear option in very old config files.
  • Switch to SDL 1.2 on the Wii and honor current widescreen mode.
  • Fix versioning being off by roughly a month.
  • Force block screen keyboards on SDL 2 and SDL 3, they do not play well with Schism.
  • Limited FPS to screen refresh rate. If it cannot be retrieved it defaults to 60hz.
  • Plenty of other smaller things.

20251014

  • AIFF exports and saves now include extra metadata like WAV and FLAC; this includes sample loops, autovibrato settings, volume, panning, and the version of Schism used to save the file. For info on how this information is stored, see the aiff_header function in fmt/aiff.c.
  • FLAC exports and saves now include ENCODER metadata which stores the version of Schism used to save the file.
  • Song exports in all supported formats now save the song title as metadata.
  • Implemented S90, S9E, and S9F Modplug extensions.
  • Implemented SSE and AVX enhanced versions of some functions, such as sample min/max, providing a huge increase in speed, especially with very large samples.
  • Fix non-native-endian signed sample saving (mostly relevant for AIFF).
  • Fix sample playback not working when focused on number entries in the Sample List.
  • Fix loading of 7-bit Oktalyzer samples.
  • Fix a nasty bug where Cxx would get ignored if paired with a pattern loop effect.
  • Fix logic bug in the volume ramping portion of the player (regressed in may 2009), which caused some clicking issues with very sudden volume changes.
  • Fix the built-in clipboard and system clipboard getting out of sync, especially with Alt-D.
  • Fix compilation on very old GCC.
  • Respect existing file mode when saving files on POSIX systems.
  • Added support for zlib decompression, allowing native loading of gzip-compressed files.
  • Added support for loading and saving .sbi (Sound Blaster Instrument) files.
  • Reverted Zxx-related changes in 20250825, as they proved to just make things worse.
  • Fixed FLAC multi-channel export.
  • Fixed buffer overflow under some audio drivers when SDL 3 is used.
  • Fixed position display in the info page being completely incorrect on little endian systems.
  • OPL: Fix first note played when keyjazzing being ignored.
  • D00: Fix a problem where a specially crafted input file could be used to hang or crash Schism.
  • D00: Add detection of older D00 files.
  • Windows: Combine MIDI in and out ports with the same name, manufacturer ID, and product ID as one duplex port.
  • ASIO: The "default" device now tries each driver in order, rather than using the first one in the registry.
  • JACK: Fix use-after-free if the JACK daemon fails to start.
  • OS X: Fix a hang on older versions when trying to execute hooks (mainly affects PowerPC).
  • OS X: Fix flicker between aliased and anti-aliased graphics.
  • SDL 1.2/SDL 2: Fix mouse cursor getting completely warped under older SDL versions.
  • SDL 1.2: Use color palettes for 8-bit video.
  • SDL 1.2: Fix audio failing to initialize when using sdl12-compat in conjunction with sdl2-compat.

Release notes

External links

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