Compose a piece adhering to the given musical structure and theme.
X:1
L:1/16
M:2/4
K:D
['', 'A,4 A,B,CD EFGA B2A2 F4 F2E2', 'B,DFA c4 A4 E4 C2 (3AGF E4'  
X:1
L:1/16
M:2/4
K:D
 A,4 |: A,B,CD EFGA | B2A2 F4 | F2E2 B,4 | E2D2 A,4 | A,B,CD EFGA | B2A2 F4 | F2E2 B,2C2 |1 
 D4 A,4 :|2 D4 C4 |:[K:A] E4 C2 (3AGF | E4 C4 | D2D2 B,DFA | c4 A4 | E4 C2 (3AGF | E4 C4 | 
 D2D2 B,DFG |1 A4 C4 :|2 A4 z4 ||  