Compose a piece by incorporating the set musical pattern in its alphabetical form along with the given melodic subject.
X:1
L:1/8
M:3/4
K:Bb
['fg f2', 'dB ec dB']  
X:1
L:1/8
M:3/4
K:Bb
 fg |:"Bb" f2 d2 d2 | dB df bf |"F7" f>e c'2 c'2 | c'4 af |"Cm" g"Eb"f gb ab | ba bd' c'e | 
"Bb" df bf ed |"F7" d2 c2 fg |"Bb" f2 d2 d2 | dB df bf |"F7" f>e c2 c2 | c4 AF |"Bb" FB Ac Bd | 
"F7" ce df eg |"Bb" fb fd"F7" ec |1"Bb" B4 fg :|2"Bb" B4 dB |:"F7" ec AF"Bb" dB | 
"F7" ec AF"Bb" dB |"F7" ec AF"Bb" dB |"F7" e4 f2 |"Bb" f4 ga |"Gm" ba gf ed |"F7" cB cd Bc |1 
"Bb" B4 fg :|2"Bb" B4 z2 ||  