Develop a musical work using the identified alphabetic pattern and the supplied melody as a theme.
X:1
L:1/8
Q:1/8=232
M:4/4
K:Bb
['dc BF', 'cf =eg f2 AB']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:Bb
|: dc | BF dc BF dc | BF ed c2 fe | df Bd ce Ac | Bb ag fe dc | BF dc BF dc | BF ed c2 fe | 
 df Bd ce Ac | B2 d2 B2 :: AB | cf =eg f2 AB | cf =eg f2 AB | c=e gb ag fe | f=e fg f_e dc | 
 cf =eg f2 AB | cf =eg f2 AB | c=e gb ag fe | f=e fg f2 :|  