In 2011, Greenwood scored "We Need to Talk About Kevin," directed by Lynne Ramsay, using instruments including a wire-strung harp. In 2012, he worked with Anderson again, composing the score for "The Master". On 13 March 2012, Greenwood and Polish composer Krzysztof Penderecki, one of Greenwood's greatest influences, released an album comprising Penderecki's 1960s compositions "Polymorphia" "and Threnody for the Victims of Hiroshima," Greenwood's "Popcorn Superhet Receiver", and a new work by Greenwood, "48 Responses to "Polymorphia"". In 2012, Greenwood accepted a three-month residency with the Australian Chamber Orchestra in Sydney and composed a new piece, "Water". In 2013, Greenwood, Yorke, and other artists contributed music to "The UK Gold", a documentary about tax avoidance in the UK. The soundtrack was released free in February 2015 through the online audio platform SoundCloud.