Produce a musical work that intertwines the supplied melodic theme and the indicated alphabetical pattern.
X:1
L:1/8
Q:1/2=80
M:2/4
K:Bb
['B2 B/c/d |{d} c3 g fedc dBBc', 'b fedc dBBc dFGA BDEG FEDC DB,']  
X:1
L:1/8
Q:1/2=80
M:2/4
K:Bb
|: B2 B/c/d |{d} c3 g | fedc | dBBc | dBBc | dBgf | edcB | cF F2 :: c2 c/d/e |{e} d3 b | fedc | 
 dBBc | dFGA | BDEG | FEDC | DB, B,2 :|  