Construct a musical piece using the designated motif and sticking to the alphabetical form presented.
X:1
L:1/8
M:2/4
K:Dmix
['AB cA', 'fd ed']  
X:1
L:1/8
M:2/4
K:Dmix
 D/E/F/G/ AB | cA AG | Ad d^c | d3 e | fd ed | cA AB | cA GE | D4 :| fd ed | cA Ad/e/ | fd ed | 
 fg a>g | fd ed | cA AB | cA GE | D4 :|  