In this London-oriented program, Andris Nelsons leads the BSO in the American premiere of the first of several BSO co-commissions this season, English composer Mark-Anthony Turnage's Remembering: In Memoriam Evan Scofield. Evan, son of the great jazz guitarist and Turnage collaborator John Scofield, died of cancer at age twenty-five. The piece was co-commissioned by the BSO with the Berlin Philharmonic and London Symphony Orchestra. Opening the program is Haydn's Symphony No. 93, one of the first of the group of bold, innovative symphonies he wrote for performance in London during his visits there in the early 1790s. The English composer Edward Elgar's tour-de-force of orchestral and expressive imagination, the Enigma Variations, is a series of widely varied portraits of his friends via transformations of a common musical theme.