Design chord combinations to enhance the harmony of the given musical composition.
A2 cA BGGB | cA A2- Aefd | eAcA BGGB | cABG A3 A :| 
 cdef gagf | edef g z e2- | edef gf e2- | efdf e2 e2 :|  
X:1
L:1/8
M:4/4
K:Ador
"Am" A2 cA"G" BGGB |"Am" cA A2-"D" Aefd |"Am" eAcA"G" BGGB |"Am" cA"G"BG"Am" A3 A :| 
"C" cdef"C6" gagf |"C" edef g z e2- |"C" edef gf e2- |"C" efdf e2 e2 :|  