Despite the great success of "Die Entführung aus dem Serail", Mozart did little operatic writing for the next four years, producing only two unfinished works and the one-act "Der Schauspieldirektor". He focused instead on his career as a piano soloist and writer of concertos. Around the end of 1785, Mozart moved away from keyboard writing and began his famous operatic collaboration with the librettist Lorenzo Da Ponte. 1786 saw the successful premiere of "The Marriage of Figaro" in Vienna. Its reception in Prague later in the year was even warmer, and this led to a second collaboration with Da Ponte: the opera "Don Giovanni", which premiered in October 1787 to acclaim in Prague, but less success in Vienna in 1788. The two are among Mozart's most famous works and are mainstays of the operatic repertoire today, though at their premieres their musical complexity caused difficulty both for listeners and for performers. These developments were not witnessed by Mozart's father, who had died on 28 May 1787.