Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:2/4
K:G
['G>A BB cB Ac', 'dc/B/ AB cB/A/ GB AG', 'BA/G/ FG A2 DE']  
X:1
L:1/8
M:2/4
K:G
 G>A BB | cB Ac | BA GF | E2 D2 | G>A BB | cB Ac | BG AF | G4 :: dc/B/ AB | cB/A/ GB | AG FG | 
 A3 d | dc/B/ AB | cB/A/ GB | AG GF | G4 ::[K:Gdor] BA/G/ BA/G/ | FG A2 | DE FG | AB AG | 
 BA/G/ BA/G/ | FG A2 | DE ^FG | G^F G2 :|  