Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:7/8
K:Amin
['F z', 'F z', 'F z', 'F z']  
X:1
L:1/8
M:7/8
K:Amin
|: ABB B z Bc | d{A} c2 BA AB | ^G2 F F z F z | E2 B, E z E z :: DED{D} F z{D} F z | FED ^GA AB | 
 ^G2 F F z F z | E2 B, E z E z ::{E} B4 B3- | B4- B3 | A4- A3- | A3- A2{A} Bc | dd/d/c BA AB | 
 ^G2 F F z ^G z | ^G2 F F z F z | E2 B, E z E z :: ^G2 F F z F z | ^G2 F F z ^GA | ^G2 F F z F z | 
 E2 B, E z E z :|  