Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/4
Q:1/4=90
M:4/4
K:Eb
['B B E/D/ E2 z A (F']  
X:1
L:1/4
Q:1/4=90
M:4/4
K:Eb
 B |"Eb" B G/E/"Fm" F"Bb" E/D/ |"Eb" E2 z A |"Bb" (F B2)"F7" =A |"Bb" B2 z/ B/"Bb7" c/d/ | 
"Eb" e/G/ (A/B/)"Ab" c"Eb" B |"Fm" A2 !fermata!A"Bb" B |"Eb" G2"Bb7" F2 |"Eb" E3"Fm" F | 
"Eb/Bb" E2"Bb" D2 |"Eb" E2 z |]  