Radio Activity: The growth of internet radio through the 2010s and the pandemic conditions of the last year have created an explosion of music on air. From the US to China, Palestine to Central Europe, South America to Africa, our global survey tracks online, FM and other radio developments. Plus a 100-strong directory of essential stations, sites and broadcasters.

Plus: Pamela Z: Born in Buffalo, New York, the radio DJ, vocalist and composer has carved out a rich and compelling career, characterised by its innovative use of technology and engaging humour. By Emily Pothast.

Invisible Jukebox: J Mascis: Will the Dinosaur Jr guitarist and vocalist find himself "Kracked" by The Wire's mystery record selection? Tested by Sunburned Hand Of The Man's John Moloney and Rob Thomas.

Sam Dunscombe: The Australian field recordist remixes the Californian desert via discarded ephemera. By Abi Bliss

We All Break: Percussionists Daniel Brevil and Ches Smith run the Vodou down. By Stewart Smith

Olev Muska: Into the archives of the Estonian-Australian folk synthesist. By Joshua Minsoo Kim

Mick Harris & Scorn: Heavy manners from the blastbeater turned bass explorer. By Phil Freeman

Unlimited Editions: Zoomin' Night

Unofficial Channels: Wouter Van Veldhoven

Global Ear: The American Composers Forum meets the challenges of the present with an eye to the future. By Vanessa Rose, Dameun Strange & Amanda Cook

The Inner Sleeve: John Oswald on a Command Records inner sleeve

Epiphanies: Matthew Shipp recalls the good example set by a straight edged William Parker

Print Run: New music books: Radio 1, Nadia Boulanger's world, Chinese sound art, journeys with The Orb, and more

On Screen: New films and DVDs: Paul Bishow & James June Schneider's Punk The Capital; Ele'onore Huisse & Francaois J Bonnet's E'chos

On Site: Recent art shows: Ray Lee's Points Of Departure; Jo Thomas's Massive Angels

On Location: Recent live events and streams: Blacktronika, Tusk TV, Rewire, Counterflows At Home, Laurie Anderson & Jason Moran, and more

Soundcheck: Tony Allen, Avant Joik, Bardo Todol Y Sus Aves Sin Nido, Bo Ningen, Victoria Bourne & Walt Shaw, Gerald Cleaver, Croatian Amor & Varg², Aaron Dilloway & Lucrecia Dalt, David Dove & Jawwaad Taylor, Danny Elfman, Etherwink & Larwott, Foodman, Mabe Fratti, Gamardah Fungus, Gavsborg, Giant Claw, Gosheven, Joel Harrison, Rip Hayman, Hprizm, Hualun, Vijay Iyer, Loraine James, Jubileum Quartet, Joelle Leandre & Pascal Contet, Joelle Leandre / Myra Melford / Lauren Newton, Kemper Norton, Angelique Kidjo, Giovanni Lami / Hannibal Chew III / Bardo Todol, Shanique Marie, Kevin Richard Martin, Mind Maintenance, Muriscia Divinorum / Pablo Picco / Aphra Cadabra, Natural Information Society with Evan Parker, Jason Nazary, Perila, Pablo Picco, Pablo Picco / Anne F Jacques, Anthony Pirog, Lee Ranaldo / Jim Jarmusch / Marc Urselli / Balazs Pandi, Keith Rowe, The Same, Satomimagae, Seccion De Ritmo, Six Organs Of Admittance, Wadada Leo Smith, Wadada Leo Smith with Milford Graves & Bill Laswell, Steven R Smith, Spellling, Three-Layer Cake, Time Cow & Giark, Vanessa Amara, Raed Yassin, Yat-Kha, Various Cold Wave #1, Various Mendacity Mogul

The Boomerang: 4Hero, Tim Buckley, Cornelius Cardew / The Montreal Scratch Orchestra, DMX Krew, Engine Kid, Gnod, Goldie, Michael Gregory Jackson, Jeanne Lee, The Master Musicians Of Joujouka, My Bloody Valentine, Kristin Oppenheim, Reagenz, Seefeel, Spike In Vain,"Blue" Gene Tyranny, Hector Zazou