Polymeter ~ Compose Polymeter Based Music


Polymeter is a MIDI sequencer for music that’s in multiple prime meters (1, 2, 3, 5, 7, 11, etc.) simultaneously. Each track has its own loop length, and when the lengths differ, the tracks “slip” (or shift phase) relative to each other. The resulting interference pattern is sufficiently intricate that variations similar to the embellishments of a live performer can be generated algorithmically.

Features:

  • Multitrack step sequencer for polymeter
  • Each track has its own loop length
  • Any number of tracks, of any length
  • Full clipboard support (copy/cut/paste)
  • Unlimited undo and redo for all edits
  • Multiple tracks can be edited at once
  • Optionally shows current position within each track
  • Drag reordering of tracks
  • Exports a MIDI file
  • Join adjacent steps to make tied notes
  • Velocity editing
  • Controller tracks
  • Recording of live arrangement
  • Editing of arrangement on timeline
  • Inter-track modulation of mute, note, velocity, duration, position, and more
  • Live performance view with full screen mode
  • Recursive modulation (modulation of modulation) for mute and position
  • Modulation graphing via Graphviz
  • MIDI mapping of all parameters with learn mode
  • Optionally transmits MIDI clock

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.

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

hypercyclic ~ LFO-driven, MIDI-mangling Arpeggiator


What is hypercyclic?

  • an LFO-driven MIDI arpeggiator, gate effect and step sequencer
  • for mangling sustained MIDI input chords
  • the output of which can then drive other MIDI instruments
  • acts either as a VST or Audio Unit plugin for your DAW, or as a standalone application
  • the original hypercyclic won 2nd place in the KVRAudio.com Developer Challenge ‘07
  • the sweet spot for hypercyclic is the narrow border between chaos and regularity. Or, in other words, how to induce a certain pleasant randomness and syncopation, yet forcing everything to align again on the bar or beat boundaries

How do you use it?

  • the main use for hypercyclic is to generate midi that can be recorded and/or sent to other plugins. However it also features a simple built-in synth for testing purposes
  • you can use two tempo-synced LFOs to modulate various parameters for creating interesting rhythmic effects and chord variations
  • a unique feature is the possibility to modulate the sequencer step size itself, which is useful for creating glitchy stuttering effects
  • another thing you can use is a groove function for playing slightly off the beat. The groove parameters can also be modulated over time by the LFOs, adding to the rhythmic variation
hypercyclic

www.mucoder.net/en/hypercyclic

Aria Maestosa ~ MIDI Editor & Sequencer


Aria Maestosa is a midi sequencer / editor. It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering score, keyboard, guitar, drum and controller views.

Aria Maestosa

sourceforge.net/projects/ariamaestosa
github.com/ariamaestosa/ariamaestosa

Giada ~ Your Hardcore Loop Machine


Giada is a free, minimal, hardcore audio tool for DJs, live performers and electronic musicians. How does it work? Just pick up your channel, fill it with samples or MIDI events and start the show by using this tiny piece of software as a loop machine, drum machine, sequencer, live sampler or yet as a plugin/effect host. Giada aims to be a compact and portable virtual device for Linux, Mac and Windows for production use and live sets.

www.giadamusic.com
github.com/monocasual/giada

Rosegarden ~ Music Composition & Editing


Rosegarden is a music composition and editing environment based around a MIDI sequencer that features a rich understanding of music notation and includes basic support for digital audio. It’s an easy-to-learn, attractive Linux application that is ideal for composers, musicians, music students and small studios or home recording environments.

rosegarden

www.rosegardenmusic.com

Frinika ~ Complete Music Workstation


Frinika is a free, complete music workstation software for Linux, Windows, Mac OSX and other operating systems running Java. It features a sequencer, soft-synths, real-time effects and audio recording.

frinika

www.frinika.com

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OpenSebJ ~ Real-time Sample Mixer


OpenSebJ is a free real time audio sample mixer that runs on Microsoft Windows. The source code for OpenSebJ is released under the GNU General Public License.

  • Supports loading of 255 audio samples, in wav format, which can be played in real time.
  • Sample properties such as volume, pan and frequency can be adjusted individually for each sample. (even during mid-play)
  • A composition tool is provided and presented in a familiar multi-track sequencer environment. Looping compositions are also supported.
  • Samples can be linked to keys on a keyboard and triggered in real time when a key press occurs.
  • Each sample can also have the play cursor position adjusted while the sample is playing, to provide a virtual needle to be moved.
  • Stream to disk recording, allows all audio played from OpenSebJ to be saved.
  • Pitch shifter roll, allows an order to be set up, so that each time a sample is played, the next pitch shift in the sequence is undertaken before the sample is played. i.e. set up a sample to key ‘1’, then set up a pitch shift sequence, high, mid, low, higher, etc. (using frequency values which are transposed onto screen ‘ranges’ to allow easier utilization).

opensebj

evolvingsoftware.com/opensebj

Qtractor ~ Audio / MIDI Multi-track Sequencer


Qtractor is an Audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio, and the Advanced Linux Sound Architecture (ALSA) for MIDI, are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.

qtractor-screenshot16

qtractor.sourceforge.io
en.wikipedia.org/wiki/Qtractor