Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:2/2
K:Bb
['f Tf>gfe (dBBd) f>gfe (dBBd) gbag fdBd', 'AFF d dedc (BGGB) dedB GABc dedc']  
X:1
L:1/8
M:2/2
K:Bb
 f | Tf>gfe (dBBd) | f>gfe (dBBd) | gbag fdBd | c>dcB AFF :: d | dedc (BGGB) | dedB GABc | 
 dedc BG GA/B/ | c>dcB AFF :|  