Build a musical number by combining the given character designation and the presented melodic structure.
X:1
L:1/8
M:2/4
K:G
['', 'Af Ad', 'G2 Ag']  
X:1
L:1/8
M:2/4
K:G
 B>c |:"G" db ge | d2 B>c | db ge | d2 g2 |"D7" fa fe | dg fa |1"G" gb ge | d2 B>c :|2"G" g4 | 
 g2 z x4 |][K:D][M:3/4]"D" Af Ad FB |"A7" Ag Ac G2 | Ag Ac GB |"D" Af Ad F2 | Af Ad FB | 
"A7" Ag Ac G2 | Ag Ac Gc |"D" d6 |"D" Af Ad FB |"A7" Ag Ac G2 | Ag Ac GB |"D" Af Ad F2 | Af Ad FB | 
"A7" Ag Ac G2 | Ag Ge Ec |"D" d6 |]  