Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/8
M:2/2
K:A
['aeca eace']  
X:1
L:1/8
M:2/2
K:A
 f |"A" eAcA eA"D"df |"A" eAcA"E7" (3BcB df |"A" eAcA cdea |"D" fd"E7"Be"A" cAA :: e | 
"A" aeca eace | aedb"E7" caBg |"A" aeca eace |"D" fd"E7"Be"A" cAA :|  