Assemble a piece of music following the alphabetical representation and incorporating the provided motif.
X:1
L:1/8
M:4/4
K:D
['g3 f e2 A2', 'a2 fg']  
X:1
L:1/8
M:4/4
K:D
|: Bc | dcBd g3 f | e2 A2 A2 AB | cBAc f2 ee | e2 dd B2 Bc | dc B2 g3 f | e2 A2 A3 G | FGAB cdef | 
 g2 gg g2 ::[K:D] fg | a2 fg a2 fg | ag f2 e4 | e2 a2 gf e2 | dcde f^efg | a2 fg a2 fg | 
 ag f2 e2 A2 | e2 a2 gfec | d4 d2 :|  