Construct a musical piece using the designated motif and sticking to the alphabetical form presented.
X:1
L:1/16
M:2/4
K:Bb
['BABc BFdc', '[BD]2[BD]2[BD]2 vAuB cBAB cdec dcBc defd cBAB']  
X:1
L:1/16
M:2/4
K:Bb
 uF2 | BABc BFdc | BABc BFdc | Bcde fdgf | edcB AFGA | BABc BFBd | BABc BFBd | BfdB AFGA | 
 [BD]2[BD]2[BD]2 :: vAuB | cBAB cdec | dcBc defd | cBAB cded | cBAG Ffec | BABc BFdF | BABc BFdc | 
 BfdB AFGA | [BD]2[BD]2[BD]2 :|  