Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/8
M:4/4
K:D
['D2 FA', 'D2 de f2 fg fedc BABc B2'  
X:1
L:1/8
M:4/4
K:D
|: FE | D2 FA dAFD | CDEF G2 FE | D2 FA dcdf | edcB AGFE | D2 FA dAFD | CDEF G2 FG | AdcB AGFE | 
 D2 CE D2 :: de | f2 fg fedc | BABc B2 Bd | e2 ef edcB | A2 ce a2 AB | d2 df edAF | GFGA BdcB | 
 AdcB AGFE | D2 CE D2 :|  