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:G
['e2 c dBG', 'efg gfe']  
X:1
L:1/8
M:6/8
K:G
 d | e2 c dBG |"^tr" B2 G GBd | e2 c dBG |"^tr" c2 A Acd | e2 c dBG | B2 G GAB | cec BdB | 
 cAA Ac :: d | efg gfe | d<gB GBd | efg gfe | e<aA Acd | efg gfe | def gdB | cac BgB | cAA Ac :|  