Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/16
Q:1/4=90
M:2/4
K:A
['A2A2 cdec B2B2 Bcde f2f2 fgaf', 'A4 a2fa g2eg f2df e2ce a2fa g2ga']  
X:1
L:1/16
Q:1/4=90
M:2/4
K:A
 A2A2 cdec | B2B2 Bcde | f2f2 fgaf | edcB AGFE | A2A2 cdec | B2B2 Bcde | f2f2 fgaf | edcB A4 :: 
 a2fa g2eg | f2df e2ce | a2fa g2ga | bagf edcB | A2A2 cdec | B2B2 Bcde | f2f2 fgaf | edcB A4 :|  