Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:6/8
K:G
['G3 GAB AGE', 'AGB cBA BGE DED GAB cBA BAG']  
X:1
L:1/8
M:6/8
K:G
|: G3 GAB | AGE GED | GGG AGE | GED DEF | G3 GAB | AGE GAB | cBA BGE |1 DED DEF :|2 DED D2 B |: 
 cBA BAG | ABA AGB | cBA BGE | DED GAB | cBA BAG | ABA ABc | dcB AGE |1 GED D2 B :|2 GED DEF || 
 G6 ||  