Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:3/8
K:D
['=c2 B2', 'cB A4 GF EFGA Bc'  
X:1
L:1/8
M:3/8
K:D
 DE | FEFA ^GE | F4 AB | =c2 B2 A2 | =c2 B2 A2 | FEFA ^GE | F4 AB | =c2 B2 A2 | F4 :: A2 | 
 d2 d2 cB | A4 GF | EFGA Bc | B2 A2 F2 | d4 cB | A4 GF | EFGA Bc | d4 :|  