Mozart - Piano Sonata in B flat, K.333: movement I

• composed in 1783 when he was getting recognition

• Piano sonatas often made for pupils to play

• small scale works like this were more likely to be printed than symphonies or concert

• Published in a set of 3 pieces = 2 solo piano and 1 for violin + piano

• K333 reference to chronological catalouge of works - exact date is sometimes doubted. 

• Mozart was virtuoso (child prodigy at keyboard)

• his income was provided by teaching daughters of rich Viennese

• wrote for forte piano and had ability to play softly or loudly depending on player's touch.

• Dynamics subtle fortepiano used but no pianissismo or fortissimo

• forte piano provided softer left hand accompaniment making appogiatura's emphasised 

• Alberti bass 

• pitch range confined - music reaches to top F bar 73 

• 2 part at beginning 

• alberti bass texture b71

• dominant pedal end of exposition b57

• monophonic music + scalic writing b8

• fuller chords eg. 6 note chord b23

• 3 part texture b45-6

• passage in 6ths b102

Sonata form

• Exposition
  • 1st subject
  • transition
  • 2nd subject
  • codetta

• Development

• Recapitualtion
  • 1st subject
  • transition
  • 2nd subject
  • Coda 

• functional tonality, modulating to closely related keys

• begins in B flat major

• second subject is in F major (dom)

• Developing section moves through keys (G minor, F minor, C minor)

• Dominant preparation b87-92 leads back to recapitulation

• perfect cadences reinforce tonality

• dominant pedals add strength to cadences. 

• functional based on standard tonal progressions

• imperfect cadence b21, interrupted cadence b83

• dominant 7th harmonies b3

• some 2nd inversion chords b75 2nd beat

• end of exposition b63 double appogiatura cadence

• chromatic chords eg augmented 6ths common Italian 6th in left hand b80

• diminished 7th b69

• circle of 5ths b143-6

• chromatic appogiatura b35

• Dominant preparation - frequently repeated chord of dominant/7th

• 4 melodic ideas in 2nd subject group

• balanced phrases but not a feature

• appoggiaturas and accented passing notes

• chromatic notes 3rd beat b6

• conjunct, large leaps are rare

• scalic passages b8

• broken chords b22

• music ornamental b18 succession of mordents and occasional trills 

• turn at end of exposition b62