Here is the opening of Mozart’s String Quartet (number 17, K.458). Notice how he varies the harmonic intervals as to include consonant intervals as well as dissonant ones.

Give the bar numbers that have:

  1. A major 3rd between the two violins
  2. A minor 6th between the first violin and the viola
  3. A perfect 4th between the second violin and the viola
  4. A perfect octave between the two violins
  5. A perfect fifth between the viola and the first violin

Consider whether the choice of intervals used by Mozart are effective in terms of:

  • Harmonic variety
  • Filling chords (cello line)