The operetta Das Dreimäderlhaus (1916) was based on Schwammerl (Mushroom, one of Schubert’s nicknames), a novel about Franz Schubert by Rudolf Hans Bartsch; the music incorporated numerous melodies by the composer. U.S. and U.K. adaptations followed: Blossom time (1921) and Lilac time (1922), respectively.
Unsurprisingly, the work was excoriated by critics, scholars, and performers for its defilement of Schubert’s melodies, spurious plot lines, and superficial, misleading, and sentimentalized portrayal of the composer’s character. Dietrich Fischer-Dieskau derided it as “Schubert steeped in kitsch”, while Maurice J.E. Brown declared that “the popularity of this pastiche has done Schubert more harm than good.”
Audiences, however, adored it; the operetta passed its 1000th Berlin performance in 1918, and its 1100th Viennese one in 1927.
This according to “Of mushrooms and lilac blossom” by Richard Morris (The Schubertian 27 [December 1999] pp. 6–14; 28 [March 2000] pp. 15–18).
BONUS: Selections from Sigmund Romberg’s score for Blossom time; the show’s publicity breathlessly promised, among other attractions, “32 Schubert themes in eight bars.”