Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/8
M:2/4
K:G
['G>AB>c d2 B2 e>dc>B A2 G2 d>efg', "d2 agab c'2 b2 a>ba>g f>e d2"  
X:1
L:1/8
M:2/4
K:G
 G>AB>c d2 B2 | e>dc>B A2 G2 | d>efg a2 f2 | bagf e2 d2 :: agab c'2 b2 | a>ba>g f>e d2 | 
 g>f e2 a>g f2 | gabg gf g2 :|  