Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/4
K:F
['FBFB c/B/c/d/ c2 fecA', 'Bd F2 E2', 'B,2 dd/d/ dd d2 f2 edcB A2']  
X:1
L:1/8
M:2/4
K:F
 FBFB | c/B/c/d/ c2 | fecA | B/A/B/c/ Bd | FBFB | c/B/c/d/ c2 | fecA | B2 B2 :| fecA | Bd F2 | 
 E2 E/D/E/F/ | E2 D2 | f2 cA | Bd F2 | E2 E/D/E/C/ | B,2 B,2 || dd/d/ dd | d2 f2 | edcB | A2 AB | 
 cc/c/c cc | c2 d2 | cBAG | F3 F!D.C.! ||  