Create a musical piece with the provided alphabetic notation system and theme.
X:1
L:1/8
M:2/4
K:Bb
['B c']  
X:1
L:1/8
M:2/4
K:Bb
 B c f d/ c/ | c d F2 | B c/ c/ f c/ d/ | c D F2 | B c f d/ c/ | f c d c | f c f d/ c/ | B2 B2 | 
 d c/ c/ B c | B c c/ B/ G/ G/ | F2 F2 | F G F2 |]  