terminatorX ~ Realtime Audio Synthesizer


 This software allows “scratching” on digitally sampled audio data (*.wav, *.au, *.ogg, *.mp3, etc.) the way hip hop DJs scratch on vinyl records. It features multiple turntables, realtime effects (built-in as well as LADSPA plugin effects), a sequencer and MIDI interface – all accessible through an easy-to-use gtk+ GUI. This software is designed to run under Linux, FreeBSD and the like.

terminatorx.org

Sunvox ~ Create Music & Add Synth Tracks


SunVox is a small, fast and powerful music sequencer with modular synthesizers. This application is addressed at all those who want to compose music everywhere they go.

Built-in synthesizers: FM; Generator; Sampler (supported formats: WAV, XI); SpectraVoice (FFT-based synth for analog-like pads); Kicker; Stereo Delay; Distortion; Echo; Filter; Vocal Filter; Flanger; LFO; Loop; Reverb.

Features and highlights:
  • Modular interface
  • Highly optimized synth algorithms
  • Flexible architecture: SunVox can working on various devices
  • Built-in synthesizers & effects
  • Analog Generator
  • DrumSynth with 120 unique synthetic drum sounds
  • FM synthesizer
  • MetaModule (use it to build your own synths/effects)

Windows download available sunvox.en.lo4d.com/windows
www.apksum.com/app/sunvox/nightradio.sunvox
play.google.com/store/apps/details?id=nightradio.sunvox
apps.apple.com/ca/app/sunvox/id324462544

CheeseTracker ~ Sampler & Sequencer


CheeseTracker is a software sampler and step-based sequencer. It allows a musician to turn single-note samples into instruments capable of covering three or four octaves (by playing the samples at different speeds, resulting in different pitches). In addition, it is possible to take a collection of samples that are recorded at different octaves, and combine them into a single “instrument,” allowing for even more octaves without sampling artifacts.

Using the Pattern Editor, it is possible to compose songs with these instruments that the computer plays automatically. The Pattern Editor allows the user to arrange samples in several independant channels, so that many samples can play simultaneously. These songs, and the samples which comprise their instruments, can be saved together in one-file archives called modules.

CheeseTracker imposes no limits on the length of the samples used. As a result, it can be used as a mixer as well as a sampler/sequencer. Effects such as reverb can be applied to each sample individually, eliminating the need for expensive pedals.

cheesetracker.sourceforge.net

AUBE ~ Sound Generation & Processing


AUBE is a system for sound generation and processing. You can process audio on the fly by setting up arbitrary configurations of sound generators, sequencers and effects modules, through which sound is played, filtered, and recorded.

www.metadecks.org/software/aube

Sekaiju ~ Windows MIDI Sequencer & Editor


“Sekaiju” is free, open source MIDI sequencer / editor software for creating and editing MIDI data. You can record MIDI keyboard or synthesizer playing to the computer, and you can compose music to play with your MIDI modules or synthesizers. Since it allows editing of all kinds of events, and has an unlimited undo and redo feature, Sekaiju can also be used as a powerful MIDI editor. A real-time input which can input each MIDI channel messages into separate tracks at the same time is a popular feature .

Sekaiju4.1_en_S

openmidiproject.osdn.jp/Sekaiju

AGS ~ Advanced Gtk+ Sequencer


Advanced GTK+ Sequencer is intended to use for music composition. It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel.

It’s designed to be highly configurable, you may add effects to its effect chain, add or remove audio channels/pads.

You may set up a fully functional network of engines, therefore exists a link editor for linking audio lines.

In conjunction with ags you need a realtime kernel and alsa support. `ags` uses conditional locks to keep several threads in sync that’s why you need at least a preemptible kernel.

Features:
  • save or open Advanced Gtk+ Sequencer XML files with XPath support
  • add or remove audio engines with adjustable audio channels and pads
  • link channels with property dialog
  • output panel, mixer, drum and matrix sequencer, soft synth and audio file player
  • piano roll with basic notation editing supporting copy & paste
  • adjustable BPM
  • LADSPA, DSSI and Lv2 support
  • export to WAV, FLAC, OGG and others
  • multiple sinks like Pulseaudio, JACK, ALSA and OSS
  • automation editor
  • waveform editor with copy & paste
  • capture sound with AgsAudiorec machine
  • MIDI instrument input
  • import/export to Standard MIDI Files
  • OSC content format support
  • OSC server for remote control and monitoring

nongnu.org/gsequencer/

sourceforge.net/projects/ags/

Helio ~ Libre Music Composition


Distraction-free – Helio is an attempt to rethink a music sequencer to create a tool that feels right. It provides a lightweight UI to help you get into the zone and focus on your ideas.

Clear over clever – Visualize music in a way that doesn’t seem so smoke and mirrors. The app may serve as a learning tool you need to grow as a composer.

Cross-platform tech – Available for all major platforms, desktop and mobile. Hosts VST and AudioUnit, runs on CoreAudio, ASIO, DirectSound, ALSA, JACK and OpenSLES. Exports to MIDI, WAV and FLAC.

helios

helio.fm

gmorgan ~ Cross-platform Rhythm Station


gmorgan is a rhythm station, a modern organ with full editable accompaniment for play in real time emulating the capabilities of commercial rhythm stations “Korg”,”Roland”, “Solton” … also has a small pattern based sequencer like “Band in a Box”. Uses the capabilities of ALSA sequencer to produce MIDI accompaniment.

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gmorgan.sourceforge.net

Seq24 ~ Minimal MIDI Sequencer


Seq24 is a minimal loop based midi sequencer. It was created to provide a very simple interface for editing and playing midi ‘loops’. After searching for a software based sequencer that would provide the functionality needed for a live performance, such as the Akai MPC line, the Kawai Q80 sequencer, or the popular Alesis MMT-8, I found nothing similar in the software realm. I set out to create a very minimal sequencer that excludes the bloated features of the large software sequencers, and includes a small subset of features that I have found usable in performing.

seq24.large

www.filter24.org/seq24