Gwaith Sŵn's Sonic Darts - sound-art and transmission art. Today: The London sound art collective compile on the theme of Numbers/Statistics, showcasing acts performing at the upcoming Gwyl Nawr Festival at Volcano Theatre, Swansea, on 20 November. Ticking along are metronomic regulars Dan Linn-Pearl, Kevin Chan and Sam Conran, playing a collection of old and new. Featuring is London-based musician Phil Swan, new Welsh collective Swn Dial and Swansea based artist British Space Group.

Soundhub brings together a diverse range of music creators based at LSO Soundhub to talk all things composition. This week: "Music's tragedy is that it begins with perfection" - Feldman. Composer Laurie Bamon explores this idea, taking in Scelsi and Sibelius, Kate Bush and Hans Christian Anderson. [Repeated Tuesday 8am].

A bilingual programme (English & Spanish) presented by critic and producer Javier Chandía which covers Latin American music from its roots to the avant-garde. This week: the music of Nomade Orquestra, a highly sensory journey that moves from funk and soul to Afrobeat, Ethio-grooves, dub and hip hop - their sound remains firmly anchored in the world of jazz while taking off to the cosmic stratosphere and incorporating electronic elements, alongside traditional Brazilian styles along the way. Visit latinwavesresonancefm.com for more information. [Repeated Thursday 5am.]