Develop a tune according to the designated alphabetic musical pattern and the provided melody.
X:1
L:1/8
M:4/4
K:G
['D2 DE G3 B E>D E<G A3']  
X:1
L:1/8
M:4/4
K:G
 D2 DE G3 B | E>D E<G A3 B | D3 E GB AG | E4 D4 :|  