Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/16
M:2/4
K:Bb
['d2>B2 c4']  
X:1
L:1/16
M:2/4
K:Bb
 d2>B2 c4 d2>B2 c4 f2dcf2dc | dcB2 c4 | d2>B2 c4 d2>B2 c4 f2dcf2dc | dcB2 c4 | G2BcG2G2 | GGGB c4 | 
 dcBB c4 cdf2dfdc | BcdfcdcB | G2FGBcBG | F8 | G>FGB2<c2d | G2FGBcBG | F8 |]  