LESSON 7 TRIO . MAJOR In constructing a trio form on a jamax major chord, the thre tones of the chord are used,with the melody note on top andthe other two under it. SEVENTH The followlng indicates the voleing of theseventh and ninth chord. The number used denotes the degree of the chord. d D el HTD TRIO FORM o, w3 LIV EXERCISES Construct a trio form on the song you have an=- alyzed.