Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:2/4
K:D
['d3 e f2 a2 g>fe>d', 'f2 e>f'  
X:1
L:1/8
M:2/4
K:D
 A>B | d3 e f2 a2 | g>fe>d f3 f | f2 e2 e2 d<e | f2 e2 e2 d<B | d3 e f2 a2 | g>fe>d f2 e>f | 
 d2 B2 B2 A>B | d2 B2 B2 :: f<g | a3 g f2 e>f | d<Bd<e f3 f | f2 e2 e2 d<e | f2 e2 e2 f<g | 
 a3 g f2 e>f | d<Bd<e f2 e>f | d2 B2 B2 A>B | d2 B2 B2 :|  