Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:4/4
K:G
['dc BGGF DGGA BGGB d2 cA BGGF', 'Bddc BG G2']  
X:1
L:1/8
M:4/4
K:G
 dc | BGGF DGGA | BGGB d2 cA | BGGF DFGB | AGAB c2 dc | BGGF DGGA | BGGB d2 cA | BGGF DFGB | 
 A2 AB c2 BA || Bddc BG G2 | Bd d2 e2 dc | Bddc BG G2 AGAB c2 BA | Bddc BG G2 | Bd d2 e2 ef | 
 gfed efdB | A2 AB c2 dc ||  