Compose a suitable series of chord progressions that complement the provided musical composition.
|: A,2 ED CA,A,G, | A,CEG c2 E^F | G2 BG AG E2 | DEGD EDB,G, | A,2 ED CA,A,G, | 
 A,CEG c2 E^F | G2 BG AG E2 | DEGG, B,A, A,2 :: A2 aA gAaA | e2 ed cAAB | 
 G2 BG AG E2 | [DG,]3 E GABG | A2 aA gAaA | e2 ed cAAB | G2 BG AG E2 | 
 DEGG, B,A, A,2 :|  
X:1
L:1/8
M:4/4
K:Amin
|:"Am" A,2 ED CA,A,G, | A,CEG c2 E^F |"G" G2 BG AG E2 | DEGD EDB,G, |"Am" A,2 ED CA,A,G, | 
 A,CEG c2 E^F |"G" G2 BG AG E2 |"Em" DEGG,"Am" B,A, A,2 ::"Am" A2 aA gAaA | e2 ed cAAB | 
"G" G2 BG AG E2 | [DG,]3 E GABG |"Am" A2 aA gAaA | e2 ed cAAB |"G" G2 BG AG E2 | 
"Em" DEGG,"Am" B,A, A,2 :|  