Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/16
M:3/4
K:Bb
['f2gf edcB', 'B2cd e2ec d2dB c2cA']  
X:1
L:1/16
M:3/4
K:Bb
 f2gf edcB b4 | f2gf edcB g4 | g2eg gfdf fece | dcBA Bcde fgab | f2gf edcB b4 | f2gf edcB g4 | 
 g2eg gfdf fece | dcBA c4 B4 :: F2 | B2cd e2ec d2dB | c2cA BABG FEDF | B2cd e2ec d2dB | 
 c2cA Bcde f4 | fedf b2ba g2gf | edef g2gf e2ed | c=Bcd edef g2e2 | dcBA c4 B4 :|  