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
['e>d B2', '(3Bc^c d2']  
X:1
L:1/8
M:4/4
K:G
|: B>c | (3ded e>d B2 g2 | f>eg>e c2 g2 | (3fgf A>B c>de>d | (3BcB A>G B2 B>c | d2 e>d B2 g>e | 
 f2 g>e c2 g>e | f2 e>d ^c>de>f | g2 d2 G2 :: (3Bc^c | d2 b2 b2 a>g | a2 e2 e2 a>g | 
 (3fgf A>B c>de>d | (3BcB A>G B>^A (3Bc^c | d2 b2- b2 a>^g | a2 e2- e2 a>g | f2 (3fed ^c2 (3def | 
 g2 b2 g2 :|  