👉 Quadruples are a type of musical note that is used in various genres to represent various emotions or states. They are often associated with joy, happiness, and excitement. In music notation, "quadruple" is represented by the symbol "Q". This is because it is a four-note chord, which can be played as a single melodic line. The number of notes on a quadruple chord is 4, so its name comes from this number.