Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/4
Q:3/4=45
M:3/4
K:G
['D G A B3', 'd d']  
X:1
L:1/4
Q:3/4=45
M:3/4
K:G
|: D G A | B3 | D G A | B3 | B e d | A3 | A c B | G3 :: d d d | b2 a | (a/g/)(g/f/)(f/e/) | d2 d | 
 d d d |"_NB1" e2 d |1 (d/c/)(c/B/)(B/A/) |"_NB2" =A2 B :|2 d3/2 B/c/A/ | G3 |]  