Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:2/2
K:G
['G2 GF', 'G2 GF']  
X:1
L:1/8
M:2/2
K:G
|: GA | BGAG EGDE | G2 GF GBAG | EGAB cBAG | EAAG A2 AB | cecA BdBG | ABAG EGDG | BGAG EGDE |1 
 G2 GF G2 GA :|2 G2 GF GABc |: d2 ed dBGA | B2 e2 e3 f | gfed BGBd | egfa g2 ef | gagf efed | 
 BedB ABGA | BGAG EGDE |1 G2 GF GABc :|2 G2 GF G2 ||  