Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:F
['F2 B A2 B', 'B,DF E2 C C2 B BGE F3']  
X:1
L:1/8
M:6/8
K:F
 C |:"F" F2 B A2 B |"F" cAc"Bb" def |"F" F2 B A2 B |"F" cAF"C" GEC |"Bb" D2 B, B,DF | 
"C" E2 C C2 B |"F" A{B}cA"C" BGE |"F" F3 F3 :|"F" c2 f e2 f |"C" gec"G" d=BG |"C" efg"Am" A=Bc | 
"Dm" dec"G" =BAG |"C" geg"G7" fdf |"C" ece"G" d=BG |"F" Afe"G" dc=B |"C" c2 c c=BA |] 
"Bb" B2 B BgB |"F" A2 A AfA |"Gm" GAG GAB |"F" cAF"C" GEC |"Bb" D2 B, B,DF |"C" E2 C C2 B | 
"F" A{B}cA"C" BGE |"F" F3 F2 |]  