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
Q:3/4=90
M:6/4
K:Gmin
['GA B3 A', 'G2 A2 B2']  
X:1
L:1/8
Q:3/4=90
M:6/4
K:Gmin
 GA | B3 A G2 d4 GA | B3 A B2 ^F4 GA | B3 A B2 G2 e2 d2 | c3 B c2 d4 || de | f3 g f2 f2 (ed)(cB) | 
 c3 d c2 c2 B2 A2 | B3 A B2 G2 A2 B2 | ^F3"^*" =E F2 D4"^**" D2 | G3 A B2"^*" =E4 cB | 
 A3 B c2 ^F4 A2 | d3 e dc d2 G2 A2 | B2 cB AB G4 |]  