Upon graduating, Rachmaninoff continued to compose and signed a 500-ruble publishing contract with Gutheil, under which "Aleko", Two Pieces (Op. 2) and Six Songs (Op. 4) were among the first published. The composer had previously earned 15 rubles a month in giving piano lessons. He spent the summer of 1892 on the estate of Ivan Konavalov, a rich landowner in the Kostroma Oblast, and moved back with the Satins in the Arbat District. Delays in getting paid by Gutheil saw Rachmaninoff seeking other sources of income which led to an engagement at the Moscow Electrical Exhibition in September 1892, his public debut as a pianist, where he premiered his landmark Prelude in C-sharp minor from his five-part piano composition piece "Morceaux de fantaisie" (Op. 3). He was paid 50 rubles for his appearance. It was well received and became one of his most enduring pieces. In 1893, he completed his tone poem "The Rock", dedicated to Rimsky-Korsakov.