Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
Q:1/4=100
M:2/4
K:G
['g |:{a} gf/g/ b>g |{a}', '|{a} gf/g/', 'FA G2'  
X:1
L:1/8
Q:1/4=100
M:2/4
K:G
 g |:{a} gf/g/ b>g |{a} gf/g/ d>B | ceAc | B/c/d/B/ Gg |{a} gf/g/ b>g |{a} gf/g/ d>B | cedF |1 
 G2 z g :|2 G2 z2 |]: G,cG,c | G,BB z | A/c/c/A/ F/G/A/F/ | GBDg | ecec | BddB/G/ | A/B/c/A/ FA | 
 G2 z2 :|  