Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:4/4
K:D
['FAAB AFED FAAB A2 de fBBA', 'D3 g faag fdde (3fed ad fddf']  
X:1
L:1/8
M:4/4
K:D
 A | FAAB AFED | FAAB A2 de | fBBA Bcde | fdef edBA | FAAB AFED | FAAB A2 de | fBBA BcdB | 
 AFEF D3 :| g | faag fdde | (3fed ad fddf | gfga beef | (3gfe be geea | fgaf bfaf | defd e2 de | 
 fBBA BcdB | AFEF D3 :|  