Music Theory Lesson
2 vs Sus Tones
2 chords, also called sus2, are constructed with the 1st, 2nd, and 5th notes of the major scale.
Sus chords, also called sus4, are constructed with the 1st, 4th, and 5th notes of the major scale.
D2
This common D2 chord shape is constructed of 1 (R for root), 2, and 5.