Compose a piece using the alphabetic notation of the assigned musical structure and the provided melodic motif.
X:1
L:1/4
M:4/4
K:G
['G/A/ B D G B, G,3 A/B/', 'd B']  
X:1
L:1/4
M:4/4
K:G
 G/A/ | B D G B, | G,3 A/B/ | c3/2 A/ B G/ | F A D3/2 c/ | c/B/A/G/ G/F/E/D/ | G2 E C | B, G A, F | 
 G G, G, :| B/c/ | d3/2 B/ d B | e2 A B/c/ | d G F G | A/G/F/E/ D B/c/ | d B d B | 
[M:4/4] c/d/ e3 e/f/ g3 |[M:4/4] f/g/a/g/ f/d/e/f/ | g G G g/a/ | b g d B |[M:4/4] c/d/ e3 A2 B c | 
[M:4/4] d G F G | A/G/F/E/ D c | B G D B, | C D/E/ A, D/C/ | B, G A, F | G G, G, ||  