Violinist Anne-Sophie Mutter performs 'It Ain't Necessarily So' with pianist André Previn on the Late Show with David Letterman in 2012 in celebration of her 35-year career.
Following the creation of several violin concertos and sonatas,
> Previn’s long-standing collaboration with violinist Anne-Sophie Mutter
> continued with his Nonet for Two String Quartets and Contrabass, which
> premiered in 2015 as part of the Edinburgh International Festival.