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
['d2 GA B2 AG', 'G2 dggf g4 fgaf g3 a bgaf']  
X:1
L:1/8
M:4/4
K:G
 d2 GA B2 AG | FGAc A4 | d2 GA B2 AG | FAdc BG G2 :| dggf g4 | fgaf g3 a | bgaf g2 ag | 
 fdcA AG G2 :|  