Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:3/4
K:G
['B,4 FD G4 AF GB,edcB TA4 G2', 'F6 F4 ^cA d4 e^c dFfdBG A4']  
X:1
L:1/8
M:3/4
K:G
 B,4 FD | G4 AF | GB,edcB | TA4 G2 | c4 (3cBA | Bd c2 B2 | AB A2 G2 | F6 :: F4 ^cA | d4 e^c | 
 dFfdBG | A4 G2 | c2 Acec | BG B2 Bd | (3cAF (3BGB, (3CB,A, | B,6 :|  