Formulate diverse chord combinations to augment the harmonic richness of the given musical work.
A A A A | A3/2 A/ E2 | A2 G A | B4 | G G G G | G3/2 G/ E2 | c2 c B | A4 |]  
X:1
L:1/4
M:4/4
K:A
"A" A A A A | A3/2 A/ E2 | A2 G A |"E7" B4 |"E7" G G G G | G3/2 G/ E2 |"A" c2"E7" c B |"A" A4 |]  