Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:2/4
K:G
['D GBBd GBBd dccB B2 AG/B/ dedc/A/']  
X:1
L:1/8
M:2/4
K:G
 D | GBBd | GBBd | dccB | B2 AG/B/ | dedc/A/ | GBBB/B/ | BA/A/Ac/c/ | eddG/B/ | dedc/A/ | GBBB | 
 AAdd/c/ | B3 |]  