Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:Bb
['f f2 g/f/ d2']  
X:1
L:1/8
M:4/4
K:Bb
 d>ddc/d/cagg/g/ | f f2 g/f/ d2 c2 | b>bbdcdcb | cagg/f/gfdc/d/ | f f2 g/f/ d2 c>c | dd d2 cdcc | 
 dc/d/cg b2 g2 | ca a2 fgfd | c4 f>gfd/f/ | c3 d c4 |]  