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A Live Programming language for music

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README.markdown

A language for live programming music in Clojure

Music as Data (MAD) is a live programming language/environment based on Processing.org written in Clojure.

MAD lets you treat music as data and apply data transformation on the fly so you can experiment with notes and samples.

You can see (and hear) examples at http://mad.emotionull.com

The documentation still lacks a lot of stuff, so this is NOT for the faint-hearted.

Example

It's best to go at http://mad.emotionull.com where more examples are (with audio).

Play a sample or note like this: (play! [kick])

Play two samples (or notes): (play! [kick kick])

Each sample is being played at one time.

If you want to play a sample at the same time: (play! [kick (chord snare hihat)])

This will play kick at one time and snare+hihat at another.

You can also play triplets: (play! [kick [snare snare snare]])

Now kick will be at one time and for the same duration, you'll have three snare hits.

Of course you can play notes: (play! [A4 B4 D#5])

Mix, notes and samples: (play! [hihat A4 kick G6])

The fun begins when you understand that you can manipulate music as data by apply tranformations. For example:

(p (reverse (pattern [kick kick])))

Now, instead of using play! (which plays samples in a loop - perfect for building stuff on the fly) you can create a pattern and then run it only for once using the p function. The advantage is that you can manipulate data and their properties thus mess around with note frequences, tempo, scaling whatever.

How to use

First, build the project (see Building). Some examples are included and I would be happy to include any of yours. If you don't use emacs, you can try this one:

  lein compile
  lein repl
  clj=> (require 'music-as-data.core)
  clj=> (in-ns 'music-as-data.core)

and keep reading after the emacs block.

If you use emacs, start your repl (lein swank) and go to core.clj . Go inside emacs, run slime-connect, go to the core namespace, select everything and press CTRL+C, CTRL+R to compile the selection.

After you have access to a REPL you are ready to go! Just run:

    (start main)

Don't close the window that will pop-up. This is the processing window (so you can have graphics too!). After that, run

  (create-notes)

and you are ready to start playing!

(p (pattern [A4 A2]))

(p (pattern [kick snare (chord hihat snare)]))

You can have it playing on a loop by executing: (keep-looping)

and then:

(play! [A4])
(play! [C5])

In order to play a pause, you can play the _ note:

  (play! [A4 _ A4])

Building

lein deps

Authors

Designed and developed by Jon Vlachoyiannis (http://jon.is.emotionull.com).

Thanks

@mar_nas (for the incredible site mad.emotionull.com)

https://github.com/rosado (for clj-processing)

http://processing.org ('cause it rocks)

http://code.compartmental.net/tools/minim/ (for the AWESOME sound system)

zero (for how to use it without emacs)

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