Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:9/8
K:Dmix
['D2 A', 'AGE G2']  
X:1
L:1/8
M:9/8
K:Dmix
 D2 A A2 G ABc | D2 A AGE G2 E | D2 A A2 G ABc |1 BAG AGE G2 E :|2 BAG AGE G2 A |: BAB dBG ABc | 
 BAB dBG c2 A |1 BAB dBG ABc | BAG AGE G2 A :|2 def gfe dBG | BAG AGE G2 E |: 
"^variations of 1st part" DED AGE ABc | D2 A AGE G2 E | DED AGE ABc |1 BAG AGE G2 E :|2 
 BAG AGE G2 A ||  