Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/16
M:2/4
K:G
['dgfe dcBA', 'g2g2g2 vAG .A2(GF) GBDG .B2(AG) FADF .A2(GF)'  
X:1
L:1/16
M:2/4
K:G
 vBc | dgfe dcBA | GBDB .B2(AG) | FADF .A2(GF) | GDEF GABc | dgfe dcBA | GBDG .B2(AG) | FGAB cdef | 
 g2g2g2 :: vAG | F"^4"ADF .A2(GF) | GBDG .B2(AG) | FADF .A2(GF) | (3(GFE) (3(DEF) GABc | 
 dgfe dcBA | (3(GAB)(uDG) .B2(AG) | FGAB cdef | g2g2g2 :|  