Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['B2 G GAB', 'efg dcB']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 c | B2 G GAB | c2 c cec | B2 G GAB | AFD D2 c | B2 G GAB | c2 c cde | dcB AGF | G2 G G2 :| z | 
 efg dcB | c2 c c3 | efg dcB | AFD D3 | efg dcB | c2 c cde | dcB AGF | G2 G G2 :|  