<Tr> <Td_colspan="2"> Problems playing this file? See media help . </Td> </Tr> <P> The third movement, a sonata - rondo, shows much similarity to the first by chord pattern and by music phrases . The first part starts simply but playfully . The theme is repeated but with the broken chords accompanying the melody . The mood slowly softens but a difficult melody is quickly established . It builds up and ends at a climax . </P> <P> In the second part the first part is repeated until its course changes to a minor key . It then plays two phrases which will be repeated in different keys . The third part comes in quickly and unexpectedly . It comes to a section where the major and minor keys switch every few bars . It slowly comes back to the major key where it repeats the opening theme for the second time . It continues with phrases adapted from the first movement . Then comes a series of arpeggios which lead to a short pause preceding the final repeat of the first theme with accompaniment variations, ending the piece </P> <P> The first movement was performed at the Royal Albert Hall in 1969 by Frank Zappa's The Mothers of Invention, accompanied by a "grotesque parody of the art of ballet dancing" performed by the band members . Though not as a direct result of this piece, Zappa was later banned from performing at this venue . </P>

Mozart sonata in b flat major k 333