Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:2/4
K:Dmix
['f>ga>f g>ed>c', 'd2 eAAe fddf eAAe f2 e2 f>ga>f']  
X:1
L:1/8
M:2/4
K:Dmix
 f>ga>f | g>ed>c | d>ef>g | f2 e2 | f>ga>f | g>ed>c | B>dc>e | d2 d2 :: eAAe | fddf | eAAe | 
 f2 e2 | f>ga>f | g>ab>g | f>ag>f | d2 d2 :|  