Learn to Play Chord Fills
There are an infinite number of licks that can be built with suspended chords (for example, Dsus2 and Dsus4) resolving to a major chord (for example, D). Example 1 shows one possible way to enhance a basic D-chord harmony. Instead of holding down each chord for an entire bar or more, you switch between them quickly, creating a small melody on the first string with the other chord tones resonating underneath. The same idea can be applied to an A chord (Example 2).
Excerpted from Chord and Harmony Basics