Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/16
M:2/4
K:G
['G2G2FGAF G4']  
X:1
L:1/16
M:2/4
K:G
 D2 | D2E2F2G2 | A2B2cBA2 | G2G2FGAF | G4 z2 FG | A2A2AB^cd | A4 AGFG | A2ABcBA2 | G4 GFEF | 
 D2E2F2G2 | A2B2c2BA | G2G2FGAF | G4 z2 |]  