Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/16
M:2/4
K:F
['fc .A2dB .G2cA .F2.F2 .F2A,C F2B,D |1']  
X:1
L:1/16
M:2/4
K:F
O fc | .A2dB .G2cA | .F2.F2 .F2A,C | F2B,D |1 G2>F2 | EFGE C2O :|2 G2FE | F2f2f2 ||  