Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/4=130
M:4/4
K:G
['G>GG>B d>ed>B d>gd>B', 'g z']  
X:1
L:1/8
Q:1/4=130
M:4/4
K:G
 D2 | G>GG>B d>ed>B | d>gd>B d>dd>B | c>ec>A B>dB>G | cBAG FGAF | G>GG>B d>ed>B | d>gd>B d>ed>B | 
 c>ec>A B>dB>G | D2 F2 G2 :: G2 Bd g z G z | g z f z e z d z | c>ec>A B>dB>G | cBAG FGAF | 
 G2 Bd g z G z | g z f z e z d z | c>ec>A B>dB>G | D2 F2 G2 ||  