Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:G
['B>GD>G E>GD>G', 'G2 G>A B>cd>B A>GE>D E<A A>G F<A']  
X:1
L:1/8
M:4/4
K:G
 G>A | B>GD>G E>GD>G | E<A A>G F<A d>c | B>GD>G E>GD>G | D<G B>A G2 :: G>A | B>cd>B A>GE>D | 
 E<A A>G F<A d>c | c>BAG3/4 G<E D>E | D<G B>A G2 :|  