Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:4/4
K:Bb
['B>AG>F E>Gc>d e>dc>B A>ca>g (3fgf', 'b2 DF Bdfb g2 EG Begb']  
X:1
L:1/8
M:4/4
K:Bb
 D>E | F>Bd>c B>AG>F | E>Gc>d e>dc>B | A>ca>g (3fgf (3efe | (3ded (3ded B>AG>F | D>Fd>c B>AG>F | 
 E>Gc>d e>dc>B | A>ca>g (3fgf (3edc | B2 b2 B2 :: (3fga | b2 DF Bdfb | g2 EG Begb | f2 CE Acef | 
 d2 B,D FBdf | b2 DF Bdfb | g2 EG Begb | A>gf>=e _e>Ad>c | B2 b2 B2 :|  