In the latest episode of The Tonic, Luke Fraser presents recent and ravishing classics by Canadian composers Linda Caitlin Smith and Cassandra Miller, alongside the innovative turntabalism of Christian Marclay and the previously lost music of the African-American performative polymath and sociopolitical provocateur Julius Eastman. And you can experience sounds unwittingly produced by yourself - from inside your own ear, via the uncanny phenomenon of otoacoustic emission in the music of Maryanne Amacher.