Compose a piece of music that adheres to the specified alphabetical framework and includes the provided theme.
X:1
L:1/16
M:3/8
K:Bb
['D4 B,B,']  
X:1
L:1/16
M:3/8
K:Bb
 z4 F,F, | F,2DDD2 | F>CC2(B,F,) | B,2 z3 E | D4 B,B, | (CB,)(B,F,) z E | D2FCC2 | 
 (CB,)(B,F,) z E | D4 B,B, | (CB,)(B,F,) z F | FD(ED)(DC) | D4 B,B, | B,2F,2 z F | FFFD(DC) | 
 D4 B,B, | B,2F,2 z2 :|  