The Emerson Quartet has signed an exclusive recording contract with Sony Classical. The new deal brings to an end the ensemble's long relationship with Deutsche Grammophon, with whom the quartet has recorded more than 30 discs since 1987.

The Emersons' first recording for Sony, set for release this November, will be Mozart's last three quartets – the 'Prussian' Quartets K575, K589 and K590. A second disc, comprising Schoenberg's Verklärte Nacht and Brahms's String Quintet in G op.111, is planned for 2012.