Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:2/4
K:F
['FGAB c2 f2 dddd dc c2 cBBB']  
X:1
L:1/8
M:2/4
K:F
 FGAB | c2 f2 | dddd | dc c2 | cBBB | A2 c2 | GFGA | F2 z2 |]  