Johan is right. A chord progression is several chords played in sequence.
Lots of songs have this chord progression
G / / / / C / / / / D / / / / G / / / /
repeated over and over. This progression is played in the key of G. You know the key is G because the first chord is G and the G is played more than any other chord.
To prove you're in G, try this experiment:
play the progression 3.5 times thru, stopping on the D chord. Let the D ring out.
Does it sound like you are done?
Now play the G and let it ring out.
Now it sounds "done."
This progression is called a I IV V (one four five) and is extremely popular.
It is I IV V because it uses the first fourth and fifth chords in the scale.
G A B C D E F G
1 2 3 4 5 6 7 1
G C D
In A, a I IV V would be A D E
A B C D E F G A
1 2 3 4 5 6 7 1
A D E
Does this all make sense?
Jon
Jon Broderick
Guitar Tricks Instructor
www.GuitarTricks.com - Home of Online Guitar Lessons