Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:3/2
K:G
['g2 d>c BG', 'GD AD BD'  
X:1
L:1/8
M:3/2
K:G
 g2 d>c BG | E A2 GFD | g2 d>c BG | EG F/G/A/F/ G2 :| GD AD BD | E A2 GFD | GD AD BD | 
 EG F/G/A/F/ G2 :|  