Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
Q:1/8=128
M:4/4
K:Bb
['B<B B2 c>A BF c<c c>d e>c', 'dB, B,d'  
X:1
L:1/8
Q:1/8=128
M:4/4
K:Bb
|: F2 | B<B B2 c>A BF | c<c c>d e>c dB | df eg ce df | G>c c>d e/d/c/B/ AF | B<B B2 c>A BF | 
 c<c c>d e>c dB | df eg ce df | F>B A/B/c/A/ B2 :: A/4B/4c/4d/4e/4f/4g/4a | 
 b/a/g/f/ g/f/e/c/ eE Ee | g/f/e/d/ f/e/d/c/ dB, B,d | eC Ce dB, B,d | G>c e/d/c/B/ BA GF | 
 Bf dB Eg ec | d<b f>d c/B/A/G/ FE | DF DF EG EG | F>B A/B/c/A/ G2 :|  