Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/8
M:2/4
K:G
['G2 _B2 A2 d2']  
X:1
L:1/8
M:2/4
K:G
 D | G2 _B2 | A2 d2 | c_BAD | G2 _B2 | A2 d2 | c_BAc | cccd | _BAGD | G2 _B2 | A2 d2 | _BAG |]  