Try to play this interval on a keyboard or piano. A chord is a group ... In this example you will hear both chord I of C Major, and the dominant 7th chord. You can follow along with the notation ...

The dominant seventh of a V chord can be shown by the symbol V7. For example, G7 is made by taking the major triad of G (G - B - D) and adding an F (G - B - D - F). A cadence is formed by two ...