Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:6/8
K:D
['', 'A,3 DFA dfd ecA', 'ede fdB', 'B AFA', 'dAF DEF EDE |1 FDC D2 B']  
X:1
L:1/8
M:6/8
K:D
 DB, |: A,3 DFA | dfd ecA | B3 AFD | EGF EDB, | A,3 DFA | dfd ecA | B/c/dB AFA |1 Bdc d2 B, :|2 
 Bdc d2 B |: AFA dfa | bgb afd | g3 f3 | ede fdB | AFA dfa | bgb afd | BGB AFA |1 Bdc d2 B :|2 
 Bdc dfe |: dAF AFE | DB,A, DFA | d3 ede | fdB B2 c | dAF AFE | EDC DFA | dcd e/f/gf |1 edc dfe :|2 
 edc d2 B |: AFA dfd | B3 dAF | DEF EDE | FDB, B,2 B | AFA dcd | B3 dAF | DEF EDE |1 FDC D2 B :|2 
 FDD D2 B, ||  