Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:C
['(3DDD F>A (3(ABc) dfaf', 'adfd (3(ded) af']  
X:1
L:1/8
M:4/4
K:C
 BEA |[M:2/2][K:D]SOSOO .!fermata!PMTuCOMd>D (3DDD F>A (3(ABc) | dfaf gfec | d>D (3DDD FA{e}dc | 
 BGEF GABc | d>D (3DDD F>A (3(ABc) | dfaf (3(gag) bg | afge fded | BGEF GABc || d2 (fd) adfd | 
 (3(ded) af gfec | d2 (fd) adfd | BGEF GABc | d2 (fd) adfd | (3(ded) af g2 (fg) | 
 (3(agf) (3(gfe) fded | BGEF GABc |]  