Piano Sonata in E flat minor, op. 26

The Piano Sonata in E♭ minor, Op. 26, is a four-movement piano sonata by the American composer Samuel Barber. Composed between 1947 and 1949, the sonata was commissioned for the twenty-fifth anniversary of the League of Composers by American songwriters Irving Berlin and Richard Rodgers. It was first performed by Vladimir Horowitz in December 1949 in Havana, Cuba. Upon its premiere, the sonata was met with immediate widespread acclaim, with The New York Times describing it as the "first sonata truly to come of age by an American composer of this period".