Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
Q:1/4=120
M:2/2
K:F
['A F2 A', 'G2 F ECEG c G2 B AFAc']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:F
 g | a/g/f/e/ fc A F2 A | BGGc AFFg | aefc A F2 A | BGcA B G2 :: F | ECEG c G2 B | AFAc f c2 f | 
 dBGd cAFB | AfcA F3 :|  