Develop a musical work using the identified alphabetic pattern and the supplied melody as a theme.
X:1
L:1/8
M:4/4
K:Bb
['z FFF B3 Bd>cBc d4 z ddd']  
X:1
L:1/8
M:4/4
K:Bb
 FFF | d3 BA>BcA | B2 F2 z FGF | e3 d/c<BA<Bd/ | c4 z c=Bc | d3 ccBA>G | GF F3 AGF | c3 A/F<CB/AG | 
 F4 z2 FA | c3 A B3 d | c/B/A/G/ F2 z2 FA | c3 A B3 d | c/f/=e/f/ F2 z FFF | B3 Bd>cBc | d4 z ddd | 
 f>edc d2 c2 | B4 z FFF | B3 Bd>cBc | d4 z ddd | f>edc d2 c2 | B4 z |]  