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:1/4=120
M:2/4
K:G
['d z', 'z (B>A) .B.c (d>e) .d.d (e>f) .g.f']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:G
"^Slow" (g>a) (g/a/b/a/) | Tg2 d z | .e.d .g.f | Te2 d z | g(g/a/) (g/a/b/a/) | gd dc/B/ | 
 .e.d .c.B | TA2 G z || (B>A) .B.c | (d>e) .d.d | (e>f) .g.f | Tg2 d z | Tg2 B>d | 
 e/d/c/B/ A(B/c/) | .d(d/e/) .d(c/B/) | TA2 G z |]  