The “Blumine” movement included in the original five-movement version of Mahler’s Symphony No. 1 was long considered lost. Composed as early as 1884 for a theater piece, Mahler inserted it into the symphony as its second movement in 1888. After three performances, he turned his back on this “Love Episode,” calling the “sentimental, gushing movement” a “youthful folly,” and removed it. Mahler’s Hamburg autograph score was only rediscovered in 1966. Benjamin Britten gave the “Blumine” movement a n...