Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:D
['FGA AGF', 'B3 BAG', 'A g3 gec']  
X:1
L:1/8
M:6/8
K:D
 A | FGA AGF | FGA AGF | d3- dAF | GFG E2 A | def edc | Bcd efg | a2 a cBc | d2 f d2 |] 
 !fermata!d | B3 BAG | DGA B3 | BAG e2 d | d2 c A3 | B3 e2 d | d c2 EBA | GFG Aed | 
 gd[bB]"^D.C." g2 |] A | g3 gec | dcd A2 A | A^GA d2 f | e3 a2 A | g3 gec | d2 f b2 a | ^gab efg | 
 aba gf"^D.C."e |]  