Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/16
M:2/4
K:D
['f/e/d3 .d2.d2 (cde2) A2G2', '.d2.d2 (cde2)']  
X:1
L:1/16
M:2/4
K:D
 f/e/d3 .d2.d2 | (cde2) A2G2 | F2A2 d2f2 | edcB A4 | f/e/d3 .d2.d2 | (cde2) A2G2 | F2D2g2f2 | 
 f4 e4 :: (agf2) f2e2 | (^def2) B4 | ^dBcd efga2 | g2f2 e4 | (gfe2) e2=d2 | (cde2) A4 | cABc defg | 
 f2e2 d4 | (f/e/d3) .d2.d2 | (cde2) d4 | (a/f/d3) .d2.d2 | (cde2) d2b2 | (af)d2 (ge)c2 | 
 (fd)B2 (ec)A2 | FAd2 (ge)c2 | d4 D4 :|  