Compose a tune that integrates the letter-based representation of the determined musical pattern and the given melodic idea.
X:1
L:1/4
M:3/4
K:G
['D G', 'B3/2 A/']  
X:1
L:1/4
M:3/4
K:G
 D G A | B3/2 A/ G | D G B | c3/2 B/ A | B3/2 c/ B | B A G | D E F | E3/2 D/ D | D G A | 
 B3/2 A/ G | D G B | c3/2 B/ A | B3/2 c/ B | D E F | G B A | G3 || B z B | B3/2 A/ G | c z c | 
 c3/2 B/ A | d2 d | d3/2 c/ B | c B A | B3/2 c/ d | B z B | B3/2 A/ G | c z c | c3/2 B/ A | 
 B3/2 A/ B | D E F | G B A | G3 |]  