Modulisme (which translates as Modularism) is a series devoted to out of leftfield modular synthesis, with a different sound-designer playing live or offering studio recordings of their choice each week. Tonight: music made by American modular synthesist Doug Lynner using his Serge System. For more information visit modulisme.info/sessions. [Repeated Thursday 6am.] 

Early start this weekend for the :zoviet * france: radio show due to special programming this afternoon. This week: The River Remembers You Swimming. This edition features tracks from three new releases on Invisible City Records by Acid Sacrifice, Azurite Sun and Banished Pills, a track from Of1000Faces new album, and recordings by Spycker, Chris Watson, and Pascal Savy. [Repeated Tuesday 5am.]

A special live broadcast. 24 leading thinkers whose individual specialist work embodies long term thought converge in a non-stop 12-hour conversation relay. Schedule: 9.50am: Introduction by Ansuman Biswas. 10am: Precious Lunga / Eyal Weizman. 10.30am: Eyal Weizman / Brian Eno. 11am: Brian Eno / Amia Srinivasan. 11.30am: Amia Srinivasan / Farhana Yamin. 12pm: Farhana Yamin / Helen Thompson. 12.30pm: Helen Thompson / Will Prentice. 1pm: Will Prentice / Vibeke Mascini. 1.30pm: Vibeke Mascini / Theodore Zeldin. 
2pm: Theodore Zeldin / Mariana Mazzucato. 2.30pm: Mariana Mazzucato / Laurie Anderson. 3pm: Laurie Anderson / Mulindwa Moses. 3.30pm: Mulindwa Moses / Sukhdev Sandhu. 4pm: Sukhdev Sandhu / Saskia Sassen. 4.30pm: Saskia Sassen / Rupert Beale. 5pm: Rupert Beale / Holly Jean Buck. 5.30pm: Holly Jean Buck / Jacqueline Springer. 6pm: Jacqueline Springer / Alexander Rose. 6.30pm: Alexander Rose / Meehan Crist. 
7pm: Meehan Crist / Naomi Alderman. 7.30pm: Naomi Alderman / Saul Griffith. 8pm: Saul Griffith / Catalina Ortiz. 8.30pm: Catalina Ortiz / John Akomfrah. 9pm: John Akomfrah / Janna Levin. 9.30pm: Janna Levin / Precious Lunga.
Visit https://www.artangel.org.uk/longplayer/longplayer-assembly/ for full details.