Harmonizing All Music with the I,IV and V Chords?

1. What does I IV V mean in music?
2. Can V chord go to IV?

What does I IV V mean in music?

In a nutshell, the I, IV, and V are the most commonly used chords in any major key. ... An uppercase Roman numeral means the chord is major; lowercase is used for minor. You can find the I, IV, and V chords in any other key the same way—by building from the first, fourth, and fifth notes in the corresponding major scale.

Can V chord go to IV?

V or v chords lead to i, VI or #vi° chords. VI or #vi° chords lead to i, III, III+, iv, IV, V, v, vii°, or VII chords.