Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:3/4
K:G
['GFA d2 cdB>B B2 AGFA d2 cAAc']  
X:1
L:1/8
M:3/4
K:G
 (3DEF | G2 FEG>G | D4 (3DEF | GGFE G2 | D3 GFA | d2 cdB>B | B2 AGFA | d2 cAAc | B2 z GFA | 
 d2 cdB>B | B2 AGFA | d2 cAAc | B2 z2 |]  