Acoustic Guitar Magazine | 4 years ago
The chord trinity known as I–IV–V is one of the most useful theoretical concepts for any musician. The I–IV–V is a skeleton key for countless songs in folk, country, rock, blues, and beyond, revealing the basic similarities of, say, “Louie Louie,” “Ring of Fire,” “Johnny B. Goode,” “Helpless,” “Three Little Birds,” “I Still Haven’t Found What I’m Looking For,” “This Land Is Your Land,” “Man of Constant Sorrow,” and “I Fought the Law.” Understanding I–IV–V progressions can help you jam along with songs you’ve never played before or change a song’s key without using a capo, and it can get you started writing your own songs, too.
http://acousticguitar.com/how-to-unlock-i-iv-v-chord-progressions/
