Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:Amin
['', 'E2 A3 B cBcd e4 c3 e', 'e6 e^g a2 g2 f2 e2 d3']  
X:1
L:1/8
M:4/4
K:Amin
 E2 |: A3 B cBcd | e4 c3 e | gage fgfd | efec A2 E2 | A3 B cBcd | e4 c3 e | gage f2 ed | e6 :: 
 e^g | a2 g2 f2 e2 | d3 e fefa | g2 gf e2 ed | c4 A3 c | e2 eg gagf | d3 f/d/ _B2 AG | A6 :|  