Jazz chord voicings are usually rootless and emphasize the 3rd and 7th notes of the chord.

As music became increasingly chromatic, the augmented fifth was used with correspondingly greater freedom and also became a common component of jazz chords.

Jazz chords also often include the 11th and 13th notes of the chord.

Mercury employed many jazz chords (major and minor 6th, 7th, 9th, 11th and 13th harmonies), and the choruses featured these voiced as 4 and 5-part vocal harmonies.

In addition to training these students to hear the difficult jazz chords and be able to sing them, they work to develop a quality persona on stage.