Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
Q:1/8=220
M:2/4
K:G
['B>A GB A2 d>c BB cB/A/']  
X:1
L:1/8
Q:1/8=220
M:2/4
K:G
 G>G GG | FA G>A | BB B>A | GB A2 | d>c BB | cB/A/ BB | BE EG | A>G G2 | dd d>c | Bd e>d | ed B>A | 
 GB A2 | d>c BB | cB/A/ BB/B/ | BE EG | A>G G2 ||  