Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
['G2 BG E2 AG', 'gfge BcdB cBcd edef gfgd Bcdf ecAF']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
 D | G2 BG E2 AG | FDEF GFED | G2 BG E2 AG | FDEF G3 :| z | gfge BcdB | cBcd edef | gfgd Bcdf | 
 ecAF G3 f | gfge BcdB | cBcd edef | gfgd Bcdf | ecAF GFED ||  