Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
Q:1/4=150
M:6/8
K:C
['G G3 G>AB c3 c>de d2 cB>AB', 'B2 G']  
X:1
L:1/8
Q:1/4=150
M:6/8
K:C
 G | G3 G>AB | c3 c>de | d2 cB>AB | c3 c2 :: d | e3 e>dc | d3 d2 d | B>cd d>cB | A3 d2 B | 
 c>dc B2 G | A>Bc B2 G | A2 G ^F>EF | G3 G2 :|  