In two weeks' time, Portland duo Golden Retriever, comprising Matt Carlson on modular synth and bass clarinettist Jonathan Sielaff, will release their second album on Thrill Jockey, Seer, following on from 2012's Occupied With The Unspoken. In the intervening period, the pair have been perfecting this new set of tracks, which sees them moving into experiments in otoacoustic emissions ("the generation of new resonance within the inner-ear as a rectification of two perfectly toned and opposing frequencies," TJ tell us) on opener 'Petrichor'. While 'Flight Song' doesn't deal in such sonics, it's a gloriously untethered cut, aptly named for the aerial quality of Sielaff's clarinet lines, stretching lazily over Carlson's equally open-feeling matrix of synths. Listen to that above, head to Thrill Jockey to put in a pre-order (it's out on March 24) and catch them at Holocene in Portland on April 6.