Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
M:4/4
K:G
['BDGB dg g2 bgdB c2 ec', 'g2 bg']  
X:1
L:1/8
M:4/4
K:G
|: (3DEF | GBDG BDGB | dg g2 bgdB | c2 ec Bdgf | edcB ADFA | (3GAB DG BDGB | dg g2 bgdB | 
 c2 ec dgfe | (3ded (3cBA G2 :: Bd | g2 bg dgBg | g2 bg dBGB | c2 ec Bdgf | edcB ADFA | 
 (3Bcd Bd c3 e | dg g2 bgdB | c2 ec dgfe | (3ded (3cBA G2 :|  