Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=320
M:6/8
K:G
['G2 B dBG gaf gdB', 'GBd gfg dgb gdB']  
X:1
L:1/8
Q:1/8=320
M:6/8
K:G
 D | G2 B dBG | gaf gdB | g2 d edB | edB AFD | G2 B dBG | gaf gdB | DFA dcA | GAF G2 :| D | 
 GBd gfg | dgb gdB | ecA BAG | FAF DEF | GBd gfg | dgb gdB | DFA dcA | AGF G2 :|  