Develop harmonious chord sequences that enhance the given music composition.
EFG |: A2 (3cBA eA (3cBA | eAaA gAfA | A2 (3cBA eA (3cBA | BEdE cEBE | 
 A2 (3cBA eA (3cBA | eAaA gAfA | ecef afec |1 BABc A2 FG :|2 BABc A2 GF |: 
 E2 (3GFE BE (3GFE | BEdE cEBE | A2 (3cBA eA (3cBA | eAaA gAfA | efec agaf | 
 efec agaf | ecag fedc |1 BAGF EDCD :|2 BABc A4 ||  
X:1
L:1/8
M:4/4
K:A
 EFG |:"A" A2 (3cBA eA (3cBA | eAaA gAfA | A2 (3cBA eA (3cBA |"E7" BEdE cEBE | 
"A" A2 (3cBA eA (3cBA | eAaA gAfA | ecef afec |1"E7" BABc"A" A2 FG :|2"E7" BABc"A" A2 GF |: 
"E7" E2 (3GFE BE (3GFE | BEdE cEBE |"A" A2 (3cBA eA (3cBA | eAaA gAfA | efec"D" agaf | 
"A" efec"D" agaf |"A" ecag"D" fedc |1"Bm" BAGF"E7" EDCD :|2"E7" BABc"A" A4 ||  