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:4/4
K:G
["gede [Gg]4 d'2", "c'bag [Aa]4 gede g4 d'2 bd'"]  
X:1
L:1/8
M:4/4
K:G
"^Rather Slow" gede g4 | d'2 bd' [Aa]4 | gede [Gg]4 | d'2 bd' [gb]4 | bd'e'd' e'd'c'b | 
 c'bag [Aa]2 | gede [Gg]4 | d'2 bd' b4 || gede fgab | c'bag [Aa]4 | gede g4 | d'2 bd' b4 | 
 defg abc'b | c'bag [Aa]4 | gede g4 | d'2 bd' b4 ||  