NTS aired an episode dedicated to the music of Woo on 28 April 2023. Woo has been played on NTS over 250 times, featured on 214 episodes and was first played on 24 July 2013.

WOO is Mark and Clive Ives, two brothers who have effectively shut out the world and created a musical world of their own. In 1972, sequestered in a small row house in Wimbledon in South London, the Ives brothers began to create a music which they wanted to hear. For several years they made tapes for their own amusement, never once thinking anyone else would be interested. It wasn't really important whether anyone else was interested, and that's one of the main reasons why WOO music works so well, and why it defies all attempts at defining what "kind" of music it is. It is music which delights in its own existence, and in the process, charms the listener like nothing else. It was 1981 before anyone else suggested the world might like a listen, too, and the result was "Whichever way you are going, you are going wrong". Released in the U.K. in 1982, it received rave critical reviews in the difficult to please British press.

Initially describing themselves as alternative, indie rock, lofi jazz, synth & nostalgic acoustic guitar music, the Ives brothers eventually shifted to albums described as ambient, new age, spiritual, angelic, instrumental music for meditation, relaxation & healing.