Create a musical piece with the provided alphabetic notation system and theme.
X:1
L:1/8
M:4/4
K:G
['G2 BA G2 Bd gfga bgdB c2', 'G4 DEFG ABcB AGAB cdef gfge defg']  
X:1
L:1/8
M:4/4
K:G
|: G2 BA G2 Bd | gfga bgdB | c2 ec B2 dB | ABcA GFED | G2 BA G2 Bd | gfga bgdB | c2 ec B2 dB | 
 AFDF G4 :: DEFG ABcB | AGAB cdef | gfge defg | bgab a2 fd | g2 bg f2 af | efge dBGB | 
 c2 ec B2 dB | AFDF G4 :|  