Explore different chord combinations to amplify the harmonic dimensions of the submitted music fragment.
cd | e4 f4 | e2 c2 f4 | e2 a2 AGAB | c2 B2 B2 cd | e4 f4 | 
 e2 c2 f4 | e2 a2 AGAB | c2 A2 A2 :: cd | e4 efec | d2 B2 B2 AB | 
 c2 ce dcBA | =G2 B2 e3 d | c4 c2 BA | d2 f2 a3 e | f2 d2 B2 ed | 
 c2 A2 A2 :|  
X:1
L:1/8
M:2/2
K:A
 cd |"A" e4"D" f4 |"A" e2 c2"D" f4 |"A" e2 a2"F#m" AGAB |"D" c2 B2"E7" B2 cd |"A" e4"D" f4 | 
"A" e2 c2"D" f4 |"A" e2 a2"E7" AGAB |"A" c2 A2 A2 :: cd |"A" e4"A7" efec |"D" d2 B2"E7" B2 AB | 
"A" c2 ce dcBA |"G" =G2 B2"E7" e3 d |"A" c4 c2 BA |"D" d2 f2 a3 e |"Bm" f2 d2"E7" B2 ed | 
"A" c2 A2 A2 :|  