Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:6/8
K:C
['A2 A AGE', 'c2 d e2 e edc e2 f']  
X:1
L:1/8
M:6/8
K:C
 c | A2 A AGE | A2 A AGE | GAB cBA | G3 E2 G | A2 B c2 A | d2 c BAG | ABc dcB | c3 c2 :: d | 
 e2 e edc | e2 f g3 | GAG GcA | G3 E2 G | A2 B c2 A | d2 B G2 B | ABc BdB | c3 c2 :|  