Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:9/8
K:G
['d c2 A (B G2)', 'B2 d e2']  
X:1
L:1/8
M:9/8
K:G
 vB2 d c2 A (B G2) | E2 A A2 B (c A2) | B2 d c2 A (B G2) | D2 F G2 A (B G2) :: B2 d e2 f g3 | 
 a2 A A2 B (c A2) | B2 d e2 g f2 a | g2 e d2 c (B G2) :|  