Build a musical number by combining the given character designation and the presented melodic structure.
X:1
L:1/8
M:12/8
K:C
['G BAG', 'd2 G BAG']  
X:1
L:1/8
M:12/8
K:C
|: G | c2 d e2 d cBc A3 | f2 G BAG d2 G BAG | c2 d e2 d cBc AcA | f2 G BAG c3 c2 :: G | 
 c2 e g3 age g2 e | d2 G BAG d2 G BAG | c2 e g3 age g2 e | d2 G BAG c3 c2 :|  