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
['gedB G3 A BAGB AE E2', 'ABGc Bd d2', 'BGBd g2 dg egde gabg adef g3']  
X:1
L:1/8
M:4/4
K:G
|: gedB G3 A | BAGB AE E2 | D2 GA Bd d2 | edgd egfa | gedB G3 A | BAGB AE E2 | B3 d egge |1 
 dBAc BGGd :|2 dBAc BGAF |: G3 B AEGE | DGBG ABGc | Bd d2 edge | dBGA BAAB | GABG AEGE | 
 DGBG ABGc | Bd d2 eage |1 dBAc BGAF :|2 dBAc BGGd |: g2 dg egde | gabg adef | g2 dg egdB | 
 ABGA BGBd | g2 dg egde | gabg adef | g3 f gfed | egfa gdef :|  