Music Matters - Edgar Varese/Ton Koopman/London Piano Making

Cutting edge musical radicalism, early music in Holland, and British pianos on Music Matters this week. Petroc Trelawny explores the music of innovative 20th century composer Edgar Varese, he visits early music pioneer Ton Koopman, and delves into the rich and largely forgotten history of piano making in London. Plus Norman Lebrecht shares his thoughts on a collision between high art and politics. Produced by Brian Jackson.