Kaffe Matthews has been making and performing new electro-acoustic music since 1990. She is acknowledged as a leading figure and pioneer in the field of electronic improvisation and live composition. In 1997 she established the label Annette Works, releasing the best of these events on the six CDs, CD Ann, CD BeA ,'CD Cecile, 'CD dd, CD eb and flo. Matthews has been awarded a BAFTA for the collaboration, Weightless Animals'.

She has collaborated with many artists including agf, Ryoko Kuwajima, Zeena Parkins, Sachiko M, Ikue Mori, Marina Rosenfeld, Pan-Sonic, O'Blaat, Oren Ambarchi, Alan Lamb, Christian Fennesz, the electronics orchestra 'MIMEO', and is now working on an opera with 'the lappetites'.

She has also been making a growing body of composed works through collaborations with a variety of people, things and processes, including NASA astronauts (Weightless Animals), kites and weather on an uninhabited Scottish island, (Weather Made), taut wires in the Australian outback, mobile phone communication, and more recently, Touching Concrete Lightly for MIMEO at the Serpentine Gallery Pavilion.

Future commissions include sonic bed for Her Noise (opening South London Gallery, September 2005), and a site specific work for the Mexican Sound Oasis Exhibition in Mexico City.