Section outline

  • In music, consonance and dissonance are categorizations of simultaneous or successive sounds. Consonance is associated with sweetness, pleasantness, and acceptability; dissonance is associated with harshness, unpleasantness, or unacceptability. (Wikipedia)

    Seconds are dissonant intervals. A minor 2nd is even more dissonant than major 2nd.

    Melodic (successive) 
    • major 2nd is DO-RE
    • minor 2nd is TI-DO