Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/4
M:3/4
K:G
['G/B/ d e F']  
X:1
L:1/4
M:3/4
K:G
 G/B/ d e | F F/A/ c | G/B/ d e | F A F | G/E/ C E | =F A c | c/_B/ G E/C/ | =F A F |]  