Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['fe dBBd AFAB defd efde faag bgaf', 'faag bgaf']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 fe | dBBd AFAB | defd efde | faag bgaf | defd e2 fe | dBBd AFAB | defd efde | faag bgaf | 
 edef d2 :| eg | faag bgaf | defd edBd | faag bgaf | defd e2 de | faag bgaf | g2 fg efdB | 
 AFF/E/F ABdf | afef d2 :|  