Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/8
M:4/4
K:G
['G2 BG DGBA GFGB dcBc ABcd', 'g2 fg'  
X:1
L:1/8
M:4/4
K:G
 G2 BG DGBA | GFGB dcBc | ABcd ecc/B/c | ecaf gedB | G2 BG DGBA | GFGB dcBc | ABcd ecge |1 
 dBcA GDEF :|2 dBcA G3 |: f | g2 GA B3 d | g2 fg edeg | aeed edeg | aeed ^cdef | gGGA BGB/c/d | 
 g2 fg edcB | ABcd ecge |1 dBcA G3 :|2 dBcA GDEF ||  