Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:2/4
K:F
['C FAAG GFFF AccA G2 z']  
X:1
L:1/8
M:2/4
K:F
 C | FAAG | GFFF | AccA | G2 z C | FAAG | GFFF | AccA | G2 z F | Accc | c2 A2 | f2 d2 | c2 Ac | 
 BGFE | FAcA | BGFE | F3 |]  