For the premiere of his First Symphony, Beethoven hired the Burgtheater on 2 April 1800, and staged an extensive program of music, including works by Haydn and Mozart, as well as his Septet, the First Symphony, and one of his piano concertos (the latter three works all then unpublished). The concert, which the Allgemeine musikalische Zeitung described as "the most interesting concert in a long time," was not without difficulties; among the criticisms was that "the players did not bother to pay any attention to the soloist."[36]
Mozart and Haydn were undeniable influences. For example, Beethoven's quintet for piano and winds is said to bear a strong resemblance to Mozart's work for the same configuration, albeit with his own distinctive touches.[37] But Beethoven's melodies, musical development, use of modulation and texture, and characterization of emotion all set him apart from his influences, and heightened the impact some of his early works made when they were first published.[38] By the end of 1800 Beethoven and his music were already much in demand from patrons and publishers.[39]