C old games sound open source

I am looking for dos music sound of old games like digger, Is there is a open source of these music?

the code should look like:

#include<dos.h> 
#include<stdio.h> 
float main(void) 
{ 
float A,Bb,D,G,F; 
A = 440; 
G = 780; 
Bb = 461; 
D = 586; 
F = 687; 
sound(G); 
delay(500); 
nosound(); 
sound(G); 
delay(250); 
nosound(); 
sound(G); 

}