Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
Q:1/2=80
M:2/4
K:F
['F2 Ac G2 Bd']  
X:1
L:1/8
Q:1/2=80
M:2/4
K:F
 F2 Ac | G2 Bd | cfed | cBAG | F2 Ac G2 Bd | cBAG | F2 F2 |:  