Develop a musical work using the identified alphabetic pattern and the supplied melody as a theme.
X:1
L:1/8
M:4/4
K:G
['BG G2', 'G2 FG', 'G2 FG']  
X:1
L:1/8
M:4/4
K:G
|: BG G2 EGDe | dBed BGED | BG G2 EGDB |1 DEGA G3 A :|2 DEGA G3 B |: FG G2 DEeg | fdBG FGFD | 
 FG G2 DBGD |1 DEGA G3 B :|2 DEGA GABc |: dGGF G2 FG | eGGF G2 FG | EFGA cBGD | EGcE FFD z | 
 dGGF G2 FG | eGGF G2 FG | EFGA cBGD | FGAB G3 z :|  