Build a musical number by combining the given character designation and the presented melodic structure.
X:1
L:1/8
M:12/8
K:Gmin
['A B2', 'fdB fdB']  
X:1
L:1/8
M:12/8
K:Gmin
 A | B2 B Bcd BGG G2 A | B2 B AcB AFF F2 A | B2 c dcB B2 g f2 e | CdB Bcd BGG G2 :: A | 
 BcB fdB fdB fdB | cdc g=ec gec gec | BcB fdf bag fdB | cBc Bcd BGG G2 :|  