Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:6/8
K:none
['B>BB d2 e f>BB f>BB', 'd2 e f>dd', 'f2 e', 'B>BB BfB BaB f>BB']  
X:1
L:1/8
M:6/8
K:none
 f | B>BB d2 e | f>BB f>BB | A>AA c2 d | e>AA e>AA | B>BB d2 e | f>BB f>BB | f>ff edc | d>BB B2 :: 
 c | d2 e f>dd | a>dd f>dd | d2 e f>dd | e>AA ABc | d2 e f>dd | a>dd f>dd | e2 e f2 e | d>BB B2 :: 
 f | B>BB d2 e | f2 e fga | A>AA c2 d | e>AA e>AA | B>BB d2 e | f2 e fga | e>ee f2 e | d>BB B2 :: 
 f | B>BB BfB | BaB f>BB | A>AA AeA | AfA e>AA | B>BB BfB | BaB f>BB | f>ff edc | d>BB B2 :|  