Balakirev, Mily Alexeyevich. (1837–1910) [Karpov, Mikhail Pavlowitsch. (1884–1960)]. Autograph Letter Signed to his student. ALS on a postcard from the influential Russian pianist and composer written to his student, the conductor Mikhail Karpov.  The letter reads, in full, translated from the Russian, "I ask you to visit me on Wednesday, November 22nd at 3 a.m. and to notify me immediately on the return form that you have received this invitation. / M.B. / November 18, 1906."  Toned, light edgewear, else in fine condition.  5.5 x 3.5 inches (14 x 9 cm).