Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:3/4
K:F
['d2 Bc', 'AB c f3 F2 G B3 _E2']  
X:1
L:1/8
Q:1/4=120
M:3/4
K:F
|:"^A""F" A2 FG AB |"C/E" c2 g3 e |"Dm" f4"^/C" e2 ||"Bb" d2 Bc de |"G7/B" f2 g3 d | 
"C" e4"C7" d2 ||"F" c2 F2 GA |"Cm" B2 _E3 G |"F" F6 :|"^B""F" f2 =e2 f2 |"Cm" _e2 d3 c | 
"Bb" d2 Bc d_e |"F" c3 F Ac ||"Dm" f2 e2 f2 |"G7" a2 g3 f |"C" e3 g"G7" fd |"C" c4 AB || 
"F" c f3 F2 |"Cm" G B3 _E2 |"F" F6 |]  