Since 2012 Erased Tapes peers Ólafur Arnalds and Nils Frahm have spent many hours together in their studios across Berlin and Reykjavik, freely improvising and occasionally capturing the music for their fans. The duo's sound is an astoundingly rich, tonally pure example of synth-driven experimentation, conceived and performed by two prolific collaborators. During a session at Nils's Durton Studio in Berlin last summer the two specially invited photographer Alexander Schneider to capture one of their unique improvised sessions. Lasting long into the night, the pair gradually and organically formed several individual songs – each contributing to the narrative of a larger, transformative piece of music. Recorded in eight hours with no overdubs or edits, 'Trance Frendz' is a captivating journey through grand soundscapes and droning crescendos which crash and recede back, making way for delicate piano notes and swirling synthesizers.

Great new album from Olafur Arnalds - a long time favourite of Rough Trade. The highly anticipated record features Ólafur’s ground-breaking new software, Stratus, which transforms the humble piano into a unique new instrument. He is currently performing his new material on a huge worldwide tour. The Stratus Pianos are two self-playing, semi-generative player pianos which are triggered by a central piano played by Ólafur, and are the centrepiece of his new works. The custom-built software is born out of two years of work by the composer and audio developer, Halldór Eldjárn. The algorithms generated from Stratus were also used to create the innovative album artwork. On the album Ólafur uses these methods reinvigorate the compositional experience, feeding back into the creative process in a completely new way. As Ólafur plays a note on the piano, two different notes are generated by Stratus, creating unexpected harmonies and surprising melodic sequences.