Compose a musical work incorporating the given motif and adhering to the outlined alphabetical framework.
X:1
L:1/8
M:4/4
K:Bb
['(b>a) (gfd).f (ed).c.B (c>dB).B']  
X:1
L:1/8
M:4/4
K:Bb
"^Pensively" (b>a) | (gfd).f (ed).c.B | (c>dB).B .B2 z .B | (edc).B (def).f | 
 (g/a/b) a.g f2 (b>a) | (gfd).f (ed).c.B | (c>dB).B B2 z B{cB=AB} | 
 (ed){d}(cB) (de) (=e/f/{a}g/f/) | (g/a/b) a.g f2 z f | (ed)(cB) .B z (c>d) | 
 (fbab){a} !fermata!g2 (b>a) | (gfd>).f (edcB) | (G<B) (B>c) B2 z .f | (ed){d}(c9/4B/) B/ z (c>d) | 
 (fb) a{ba^ga}(c'/>b/){f} !fermata!g2 (b>a) | (gfd>).f (ed){d}(cB) | (GB) (B3/2{d}c) !fermata!B2 ||  