Qtractor

Qtractor – полнофункциональный, хоть и относительно молодой, MIDI- и аудио-секвенсер для Linux. Qtractor Написан на Qt4 без использования KDE-libs.

Features:

    * Multi-track audio and MIDI sequencing and recording.
    * Developed on pure Qt4 C++ application framework (no Qt3 nor KDE dependencies).
    * Uses JACK for audio and ALSA sequencer for MIDI as multimedia infrastructures.
    * Traditional multi-track tape recorder control paradigm.
    * Audio file formats support: OGG (via libvorbis), MP3 (via libmad, playback only), WAV, FLAC, AIFF and many, many more (via libsndfile).
    * Standard MIDI files support (format 0 and 1).
    * Non-destructive, non-linear editing.
    * Unlimited number of tracks per session/project.
    * Unlimited number of overlapping clips per track.
    * XML encoded session/project description files (SDI).
    * Point-and-click, multi-select, drag-and-drop interaction (drag, move, drop, cut, copy, paste, paste-repeat, delete, split, merge)
    * Unlimited undo/redo.
    * Built-in mixer and monitor controls.
    * Built-in connection patchbay control and persistence (a-la QjackCtl).
    * LADSPA, DSSI and native VSTi plug-in support.
    * Unlimited number of plug-ins per track or bus.
    * Plug-in presets, programs and chunk/configurations support.
    * Unlimited audio effect send/return inserts per track or bus.
    * Audio/MIDI clip fade-in/out (linear, quadratic, cubic).
    * Audio/MIDI clip gain/volume, normalize, export.
    * Audio clip time-stretching (WSOLA-like or via librubberband), pitch-shifting (via librubberband) and seamless sample-rate conversion (via libsamplerate).
    * Audio/MIDI track export (mix-down, merge).
    * Audio/MIDI metronome bar/beat clicks.
    * Unlimited tempo/time-signature map.
    * MIDI clip editor (matrix/piano roll).
    * MIDI instrument definitions (a-la Cakewalk(tm)).
    * MIDI controller mapping (mixer).
    * MIDI system exclusive (SysEx) setups.
    * JACK transport sync master.
    * MMC control surface enabled.
    * MIDI Song Position cueing support.
    * Configurable keyboard shortcuts.

http://qtractor.sourceforge.net/qtractor-index.html