Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
Q:1/4=100
M:6/8
K:D
['d2 d def ecA A3 B/c/dB AFA', 'E2 D ABc']  
X:1
L:1/8
Q:1/4=100
M:6/8
K:D
 d2 d def | ecA A3 | B/c/dB AFA | B/c/dF"^tr" E2 D | dcd def | ecA"^tr" A3 | (B/c/d)B AFA | 
 B3 d3 :: D2 F"^tr" E2 D | ABc d3 | BGE AFD | CDE A,3 | DEF"^tr" E2 D | ABc def | dcB AFA | 
 (B/c/d)F"^tr" E2 D :|  