Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:2/4
K:F
['fcAc fdBf', 'z2 (vge) (ge) (af) (cA) BAGF E/F/G/E/', 'f2 (e/d/c/B/)']  
X:1
L:1/8
M:2/4
K:F
 fcAc | fdBf | egeg | (f/e/f/g/) (.f.c) | fcAc | fdBf | [ac]2 [eB]2 | [fA]2 z2 :: (vge) (ge) | 
 (af) (cA) | BAGF | E/F/G/E/ C2 | (vfc) .c.A | (fd) .d.B | [ac]2 [eB]2 | [fA]2 z2 :: 
[K:Bb] f2 (e/d/c/B/) | Eg Df | Ce B,d | (c/A/)c/A/ F2 | f2 (e/d/c/B/) | gabB | cBcd | B2 z2 :|  