Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:3/4
K:F
['FG A3 ABA AG G2 GA B3']  
X:1
L:1/8
M:3/4
K:F
 FG | A3 ABA | AG G2 GA | B3 BcB | BA A2 cc | B3 AdB | G2 z2 FA | c2 c2 dc | BABdcB | AGAcBA | 
 Gc c2 GG | G3 ABc | A4 |]  