It's not just chordal harmony.
The soprano recitative uses word painting and sustained chordal harmonies to urge the listener into heaven.
His setting of Psalm 6 was far more conservative, with a plainchant melody as its backbone and with canonic sections offset by more staid, chordal harmonies.
The third section, the one that depicts the transcendental ascent into the realm of spirit, features full orchestral chordal harmony in quarter tones.
In many cases the accompaniment may be no more than a doubling of the melody (at the unison or octave, or even in the bass) with added chordal harmony.
This obscures a clear sense of chordal harmony.
But on Wednesday night, he was backed by Samuel Avoyan on electronic keyboard, who added not just the traditional drones but also chordal harmonies, moving the music toward the world's hotel lounges.
The call and response between the group's driving chordal harmonies and its gruff or soaring lead vocals testify to the power of faith and long years of teamwork.
His arrangements changed drones to counterpoint and chordal harmony; they added dramatic crescendos and sudden hushes, the dynamics of a professional ensemble.
The opening chorus is a chorale fantasia wherein the soprano sings the chorale melody while the lower voices create chordal harmonies.