Sir Simon Rattle conducts the London Symphony Orchestra in a concert dedicated to 20th century music. Canadian Barbara Hannigan brings her phenomenal coloratura soprano voice to the three bravura arias from Ligeti’s Le Grand Macabre and the three extracts starring Marie, the doomed heroine of Berg’s Wozzeck. The “sparkling diamonds” of Webern’s Six Orchestral Pieces and Stravinsky’s Rite of Spring, dating back nearly a century, but still as fresh, open and close this tremendous program.