Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:3/4
K:G
['GA Bc de d3 c B2', 'B2 A2 G2', 'G6 GA B2 c2 d4 e2 c2'  
X:1
L:1/8
M:3/4
K:G
 GA Bc de | d3 c B2 | d2 c2 A2 | B6 | GA Bc de | d3 c B2 | A3 G A2 | G6 :: B2 A2 G2 | B3 c B2 | 
 B2 A2 G2 | d6 | B3 A G2 | d2 dc B2 | cB AG AF | G6 :: GA B2 c2 | d4 e2 | c2 A2 d2 | B3 A G2 | 
 FG AB cA | B2 AB cB | AG FG AF | G6 :|  