Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:12/8
K:G
['g edB d2']  
X:1
L:1/8
M:12/8
K:G
 g |"G" edB d2 B d2 B B2 g |"G" edB d2 B"D7" c2 A A2 g |"G" edB d2 B BAB"C" g3 | 
"Em" BAB g3 B2 G"C" G2 :| f |"G" gag fgf g2 e"Em" e2 d |"Am" eaa aga"Em" b2 e e2 f | 
"Em" gag"D" fgf g2 e"C" e2 d |"Em" BAB g3 B2 G"C" G2 :|  