Progressions using only two chords are sometime called vamps (a vamp can also be just a single chord played).
See also Chord progressions in famous songs. It starts with fundamental and easy progressions that include few chords and continues with progressions with more chords (the first in most categories is presented by diagrams otherwise, the chord names can mostly be clicked on if you need to look them up). On this page you will be presented to typical chord progressions. What makes a chord progression stand out is not only the chords it contains – many songs use pretty much the same – it' also about the rhythms and instrumentation. It's easy in theory, but the delicate aspect is to find great, and perhaps original, combinations. Three, four, five chords or so following after each other forms a progression. A chord progression is a sequence of chords.
