Long Sorrow (2005), filmed on a public housing estate in Berlin, is an enigmatic record of a performance orchestrated by the artist. Sala invited noted free jazz musician Jemeel Moondoc to perform while suspended outside the window of an empty apartment on the eighteenth floor. For the Serpentine, Sala staged the performance 3-2-1 (2011), in which saxophonists Andre Vida and Caroline Kraabel responded live to Long Sorrow in a series of daily performances. 3-2-1 begins with one of these saxophonists accompanying an audio recording of Moondoc’s improvisation with his own earlier performance on film, resulting in a ‘trio’: the film, the audio recording and the live performance. The saxophonist at the Serpentine then played live with Long Sorrow, a ‘duet’, before finally performing a solo after the film ended. 3-2-1 punctuated the fixed cycle of the show with an improvised element, integrating the strands of film and performance that run through Sala’s work. Vida improvised live in the exhibition throughout October and November, undertaking more than 400 performances in response to Long Sorrow during this period, exploring the tension this sets up between repetition and improvisation.