Instrumental music[edit]

Impressionist composers like Claude Debussy and Maurice Ravel often used close harmony in their works and other intervals, such as 7ths, 9ths, and 11ths may be used since the chords have four or more notes and the harmonies are more complex. In jazz, this influence flowered in the works of George Gershwin and Duke Ellington.[6]


A well-known example of consistent instrumental close harmony is Glenn Miller's "Moonlight Serenade" which uses the full range of single-reed wind instruments (soprano clarinet, alto, tenor, and baritone saxophones) to make a distinctive sound by harmonizing the different sections all within a single octave. Miller studied the Schillinger technique with Joseph Schillinger,[7] who is credited with helping Miller create the "Miller sound", and under whose tutelage he himself composed what became his signature theme, "Moonlight Serenade".[8]

Block harmony[edit]

In organ performance, block harmony means that close position chords are added below the melody in the right hand, and the left hand doubles the melody an octave lower, while in open harmony the middle note of the chord is played an octave lower creating an "open" space in the chord.[9]

Block chord

Open chord