Compose a piece using the specified musical pattern based on the alphabet notation and provided melodic motif.
X:1
L:1/8
M:2/4
K:Bb
['b>a gf g>f ed cd e=e .f2', '(d2 d2)', 'cd e2']  
X:1
L:1/8
M:2/4
K:Bb
"Bb" b>a gf |"Eb" g>f ed | cd e=e |"F7" .f2 AG/A/ |"Bb" .B2 z2 | z2 f2 |:"Bb" (f3 b) | f3 d | 
"F7" (f2 e2) | (c2 A2) |"Bb" B3 A | B2 d2 | (F4 | F2) B2 |"Eb" g4 | b2 (ag) |"Bb" f3 ^f | 
"F7" (ag ec) |"Bb" B2 (c/B/A/B/) |"F7" d3 c |"Bb" (B4 |1 B2 f2) :|2 .B2 F>F |:"F7" e>d (c2 | 
 c2) d>e |"Bb" g>f (d2 | d2) f>b |"F7" a>g (e2 | e2) e>a |"Bb" g>f (d2 | d2) B>B |"Eb" B>e (g2 | 
 g2) e>g |"Bb" f>d (f2 | f2) B>c | d>F (d2 |"F7" d2) c>f |"Bb" (B4 |1 B2) F>F :|2 B2 z2 || 
[K:Eb]{Bcd}"Eb" e2 B>=B |"Fm" cG AF |"Bb7" .B2 !>!de/d/ |"Eb" .e>(B c>e) |:"Eb" (g4 | g>)(G B>c) | 
 (B4 | B>)(B e>g) |"Bb7" (f4 | f>)(A c>B) |"Eb" (G4 | G>)(G c>e) |"Cm" (e4 | e>)(G c>e) |"G" (d4 | 
 d>)(d g>^f) |"D7" (=e4 | e)(=A =e>d) |"G" (G4 |1"Bb7" G>)(B e>f) :|2"G" G2"Bb7" B2 |:"Eb" B2 cd | 
 e2 de |"Fm" d2 c2 | d2 AB |"Bb7" d2 c2 | d2 Ac |"Eb" B2 =A2 | B2 GA | B2 cd | e2 de |"Fm" d2 c2 | 
 f2 cd |"Eb/Bb" e2 G2 | B2 =AB |"Bb7" c2 d2 |1"Eb" .e2 GA :|2"Eb" ee/e/ .e2 :|  