Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:6/8
K:D
['A3 =CEG =CEG dcd', 'G3 GAB c3 cde']  
X:1
L:1/8
M:6/8
K:D
"A" A3 |:"D" DFA"C" =CEG |"D" DFA"C" =CEG |"D" DFA"Bm" dcd |"Em" ecA"A" GFE |"D" DFA"C" =CEG | 
"D" DFA"C" =CEG |"D" DFA"C" GE=C |"A" A,B,C"D" D3 ::[K:G]"G" G3 GAB |"C" c3 cde |"G" d3 B3 | 
"D" A3- A3 |[K:G]"G" G3 GAB |"C" c3 cde |"G" d2 g"D" fga |"G" g3 :|  