Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:D
['B>d A>FD>F G<B', 'DA d>ef>g a>fd>c B<B g>f e2- ef'  
X:1
L:1/8
M:4/4
K:D
|: vd<d B>d A>FD>F | G<B A>F E2- EA | d<d B>d A>FD>F | G<B F>E D2- DA :: d>ef>g a>fd>c | 
 B<B g>f e2- ef | d<d B>d A>FD>F | G<B F>E D2- DA :|  