Chords are built from scales. To build a Cmajor chord use every other note from the C to the G of the Cmajor scale. These three notes are called the root, the 3d, and the 5th of the chord. This type of chord is a triad, which means it contains 3 notes stacked in thirds.
Build a Cmajor chord.Roll over the notes for hints. Click to find the root(C) the 3d(E) and the 5th(G).