Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:4/4
K:Bb
['B,FDF BFBd f<d', 'B D/E/ FBDB FBDB G>B G/F/E/D/ C2']  
X:1
L:1/8
M:4/4
K:Bb
 D | B,FDF BFBd | f<d c>B G2 GB | B,FDF BFBd | f<d B>d f2 ed | egce dfBd | c>d (e/d/)c/B/ G2 GB | 
 B,FDF BFBd | f<d c>d B2 B || D/E/ | FBDB FBDB | G>B G/F/E/D/ C2 CD/E/ | FBDB FBDg | 
 f<d B>d f2 (ed) | egce dfBd | C>d e/d/c/B/ G2 GB | B,FDF BFBd | f<d c>d B2 B ||  