Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:2/2
K:D
['(Ad).d.d (df).f.a', 'd f (dA) A2 (Bc) d2 AFED']  
X:1
L:1/8
M:2/2
K:D
 A | (Ad).d.d (df).f.a | gfed (ce) A2 | (Ad).d.d (df).f.a | gfge d2 d :: f | (dA) A2 (Bc) d2 | 
 AFED (DE) E2 | (DA).A.A (.Bc).d.e | fgef d2 d :|  