Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/16
Q:1/4=80
M:2/4
K:Bb
['F2 Bcde fedc dcBA B2>b2 bagf gfed', '_a2gf geBG E2g2 cd=ef g=egb afcA F2f2']  
X:1
L:1/16
Q:1/4=80
M:2/4
K:Bb
 F2 | Bcde fedc | dcBA B2>b2 | bagf gfed | cBAG F2>F2 |"^**" BFTF=E/F/ cFTF=E/F/ | dBcd efga | 
 b2ag bgf=e |{=e} f6 :: f2 | Bdfg _a2gf | geBG E2g2 | cd=ef g=egb | afcA F2f2 | ga b4 g2 | 
 fd B4 e2 | dbag fedc | B6 :|  