Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:2/4
K:Bb
['Bdce AcBF Bdce fedc Bdce Ac Bg', 'bfgd ecdB'  
X:1
L:1/8
M:2/4
K:Bb
 Bdce | AcBF | Bdce | fedc | Bdce | Ac Bg | fedc | B2 B,2 :: bfgd | ecdB | bfgd | ed c2 | bfgd | 
 ecdB | ecAc | B2 B,2 :|  