Karlheinz Stockhausen
In this rare, extended interview, the 20th century’s leading cosmic courier gets all starry-eyed about music’s final frontier, and takes Ken Hollings on a voyage beyond the planets towards the future of sound

Invisible Jukebox: Stock, Hausen & Walkmen
The sampladelic pranksters attempt to identify tracks by Throbbing Gristle, General Strike, Derek Bailey, The Beat Junkies, Henri Chopin, Björk and more. Tested by Tony Herrington

The Primer: Tropicalia And Beyond
Three decades ago, the modified bossa nova of Caetano Veloso, Gilberto Gil, Os Mutantes, Milton Nascimento and others sparked a velvet revolution in Brazilian music. Ben Ratliff sifts through the evidence

The Dead C
Via their numerous group projects and labels, the duo of Michael Morley and Bruce Russell has established New Zealand as a core node on the international noise music network. By Philip Matthews

Undercurrents #6: White Line Fever
In our series tracking the hidden wiring of 20th century music, Biba Kopf hits the autobahn with the German pioneers of motorik rock: Kraftwerk, Neu!, La Dusseldorf and Harmonia