Live-Sequencer

Live-Sequencer does the following: An editor shows a textual description of music (like Haskore), an interpreter computes and emits a stream of MIDI events via ALSA. While doing so it highlights active terms and shows the result of the term reductions. The nice thing is, that the user can change the program while it is performed. Additionally modules can be altered via a web interface. This way several people can take part in the composition. However they need to have video and audio access to the running sequencer in order to see and hear how their parts fit into the overall composition.

We address two applications:

• interactive multi-user programmed music composition
• education of how functional programs are interpreted

Resources

• Installation from Hackage: live-sequencer
• Bug-Tracker: http://dfa.imn.htwk-leipzig.de/bugzilla/describecomponents.cgi?product=live-sequencer
• Johannes' Git repository - the main repository:
  • Direct access: git clone git://dfa.imn.htwk-leipzig.de/srv/git/seq/
  • Web frontend: http://dfa.imn.htwk-leipzig.de/cgi-bin/gitweb.cgi?p=seq.git;a=tree
• Henning's Git repository with the cutting edge features:
  • git clone http://code.haskell.org/~thielema/livesequencer/
• some example songs:
  • http://code.haskell.org/~thielema/livesequencer-example/

Papers

• Henning Thielemann: Live-Musikprogrammierung in Haskell, Arbeitstagung Programmiersprachen ATPS 2012 (German)
• Henning Thielemann: Live music programming in Haskell, Linux Audio Conference LAC 2013

Demonstrations

• kling klong
• electronical menu
• Tausend Sterne sind ein Dom (engl. "Thousand stars are a cathedral")
• Glorious Kingdom (Gospel)
• Alta trinita beata (featuring speech synthesis)
• Drei Chinesen mit dem Kontrabass (featuring speech synthesis)