Auditorium

auditorium is an online flash-based music game.
The idea is to direct the flow of particle streams to "fill up" some auido level meters. By doing so you increase the volume of different audio tracks and produce a finished piece of music to complete the level.

The game uses flash-based audio and so this side is not brilliant - it only plays audio loops and these are quite obvious when they loop.
However, the game is still only a prototype and so the audio side of things may well get better as they developers continue to work on the game. Visually it's very good!

AudioTouch

Over at Make Magazine there is a video of a demo of the AudioTouch system. This is a multi-touch musical interface.

This system is being produced by Seth Sandler as part of his final degree project.
At the moment it is still a work in progress, and there appear to be one or two little buggy things still in the system, but some of applications he has created using the multi-touch system look pretty cool - think tenori-on and Elecktroplankton.

RJDJ - music app for iphone

Got an iphone? Get RJDJ!
RJDJ is an app for the iphone that generates original interactive music/sounds based on sensory input from the microphone, camera and accelerometers of the iphone.
The software for RJDJ is written in pd, the open-source alternative to MaxMSP.

"Instead of just evolving and allowing inputs, it makes use of the iPhone microphone and sensors to respond to your environment. Not only does the music change, but it changes because of where you are and what you’re doing. The creators describe the effect:

The world around you will sound different or suddenly become part of a song. Some scenes sound best in certain situations like walking through the city, being alone, or making music with your friends. You can also record your mind twisting hearing sensations and listen to them later just like a normal music title.

RjDj affects the perception of your reality. It is the soundtrack to your life."

via create digital music

Some video demos of RJDJ in action:




The "single' version of RJDJ is free, but only comes with one "scene" (a scene is essentially a patch that produces sound in a particular style), while the "album" version which comes with multiple scenes is $2.99 (at the time of writing).
As the app uses pd as its audio engine it is possible to create your own "scenes" and load them into RJDJ in order to create your own unique auditory experience.