Just got back from Cybersonica festival in London. More festival reporting from Regine and Mazine.
At Cybersonica was Audio Sphere by Someth;ng, a kind of upside down musical wind chime that swayed back and forth.

Along the same lines is another project by Mauricio Melo titled Swayway Midi Chimes at New York University. (development blog)

Following on from my research into controllers as instruments I have been looking at artists and programmers that have turned existing game engines info performance and composition environments. If you know of any more, please post a comment and I will post them here.
Vladimir Todorovic over at tadar.game music uses the Unreal engine for this [...]

Following on from this post, here is an update. Thanks for the emails and comments. Keep em coming.
Tom Verbruggen (toktek) of sonido gris and VJ MNK use game controllers in their performance. Thanks Remco.

StickMusic is an instrument comprised of two haptic devices, a joystick and a mouse, which control a phase vocoder in real time. [...]

The untitled box / mlr, is a performance interface by brian crabtree. Before I mention anymore, check out this 7mb video (quicktime mp4) which will explain everything.
Personally, I am more interested in making things open source, let people build their own controllers and build upon your project as a community, in the same way as [...]

I have been researching the use of consumer video game controllers to be used as peformance devices and musical instruments. By making such devices, many people are already used to playing with controllers, so it makes them instantly accessible. There are many examples out there, a few I have found listed below, but if you [...]

Bristol based artist Luke Jerram created a project last year entitled Sky Orchestra. Sky Orchestra are developing music specifically for sleeping people which is delivered out of the sky. Hot air balloons, each with speakers attached, take off at dawn to fly across a city. Each balloon plays a different element of the musical score [...]

Sonasphere - ‘a kinetically driven interactive music environment’ reminds me of the navigable soundscapes of Altzero, combined with the objects and connection types of ReacTable.
Sonasphere is a piece of software for Mac only by Nao Tokui and Karl Willis. The 3D space becomes a performance / composition environment, where each object is either a sound [...]

Whilst doing my dissertation research on appropriated technology, I was introduced to gameboyzz orchestra use Gameboys and other low-tech devices to perform their music.
On the subject of using a Gameboy for sound, digital artist Toshio Iwai (mentioned in previous posts) has created Electroplankton for Nintendo DS.

The built in microphone and the touch screen gives the [...]