Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:4/4
K:C
['G3 A GECE G^FGA GECE F2 F/G/A', 'EDEC DEFG AFDC B,CDE DB, G,2 CE'  
X:1
L:1/8
M:4/4
K:C
 G3 A GECE | G^FGA GECE | F2 F/G/A GECE | FEDC D>B, G,2 | G3 A GECE | G^FGA GECE | F2 F/G/A GECE |1 
 D/E/D CB, CDEF :|2 D/E/D CB, C3 D || G,2 D2 D^CDB, | G,2 E2 EDEC | DEFG AFDC | B,CDE DB, G,2 | 
 CE G2 G3 E | FGAB c2 BA | GEAF EFA,B, | D<C E2 C4 :|  