Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:2/4
K:D
['A AFFA AFFA GG GF/G/ F3 F', 'z A .C.C.C.C D3 E/F/ GGGG F3'  
X:1
L:1/8
M:2/4
K:D
 A | AFFA | AFFA | GG GF/G/ | F3 F | FDDF | FDDF | EE ED/E/ | D3 a | affa | affa | gg gf/g/ | 
 f3 f | fddf | fddf | ee{f} ed/e/ | [Fd]2 z :: A | .C.C.C.C | D3 E/F/ | GGGG | F3 A |{D} CCCC | 
 D3 D | EECC | D3 a | .c.c.c.c d2 e/f/ | gggg | f3 a | cccc | d3 d | eecc | [FAd]2 [FAd] :|  