// This moves tempo events from track 2 to track 1 and omits other tempos events.
#include "h.h"
#include <stdio.h>
BP bp; note * mus = 0;
int main(){
note* music = Read("", &bp);
{void fed(note n) {
  if(n.dur == OpaqueStuff && n.o.opaque.subtype == 81)
    {if(n.trk == 2) {note k = n; k.trk = 1; aug(k, &mus);}}
  else aug(n, &mus);}
scan(fed, music, 1);}
Write("", mus, &bp); return 0;}