Question: Dynamic list chained inside another, in C

I'm having a hard time getting a dynamically linked list inside another using data structure and manipulating it, as I have not found anything that exemplifies how to create a list within another. I can create a single dynamic list, but I can not create another one within it.

What my program should do:

I have a list of Bands ; each band is a list of albums ; and each album is a list of music . And in the program the user can manipulate musics, albums and bands as he wants.

My code is below, but it does not work. Could someone give me a light?

.C file

#include "biblioteca.h"

ElemM *lm;
ElemA *la;
ElemB *lb;
//---------------------------MAIN--------------------------------->

int main()
{
  lb = cria_lista_banda();
  la =  cria_lista_album();
  lm = cria_lista_musica();


  system("PAUSE");  
  return 0;
} 
//----------------------------------------------------------------->

ElemB *cria_lista_banda(){
        ElemB *lb;
        lb =  malloc(sizeof(ElemB));
        lb->prox_banda = NULL;
        return lb;


}

ElemA *cria_lista_album(){
        ElemA *la;
        la =  malloc(sizeof(ElemA));
        la->prox_album= NULL;
        return la;


}

ElemM *cria_lista_musica(){
        ElemM *lm;
        lm =  malloc(sizeof(ElemM));
        lm->prox_musica= NULL;
        return lm;


}

int incluir_musica(ElemM *lm, ElemA *la, ElemB *lb, int id_m, int tempo, char *nome_m, int id_a, int id_b){
        int valor1, valor2, valor3, i;

        valor1 = busca_banda(id_b, lb);
        valor2 = busca_album(id_b, id_a, lb, la);
        valor3 = busca_musica(id_b, id_a, id_m, lb, la, lm);
        if(valor3 == -1) return -1;

        ElemB *q;
        q = lb->prox_banda;
        for(i = 0; i <= valor1; i++){
              q = q->prox_banda;
        }
        ElemA *p;
        p = q->albuns_da_banda->prox_album;
        for(i = 0; i <= valor2; i++){
             p = p->prox_album;         
        }

        ElemM *novo, *novocpy;
        p->musicas_do_album->novo = malloc( sizeof(ElemM));
        novocpy = p->musica_do_album->novo;
        if(novo == NULL) return 0;
        novocpy->id_musica = id_m;
        novocpy->tempo_da_musica = tempo;
        strcpy(novocpy->nome_musica, nome_m);
        novocpy->prox_musica = lc->prox_musica;
        lm->prox_musica = novocpy;
        return 1;
}

int busca_banda(int id, ElemB *lb){
        int cont = 0;
        ElemB *p;
        p = lb->prox_banda;
        while(p != NULL && p->id_banda != id){
                p = p->prox_banda;
                cont++;
        }
        if(p == NULL) return -1;
        return cont;
}

int buscar_album(int id_b, int id_a, ElemB *lb, ElemR *la){
        int valor_busca = busca_banda(id_b, lb); 
        int i;
        int cont = 0;

        if(valor_busca == -1) return -1;
        ElemB *q;
        q = lb->prox_banda;
        for(i = 0; i <= valor_busca; i++){
              q = q->prox_banda;
        }
        ElemA *p;
        p = q->albuns_da_banda->prox_album;
        while(p != NULL && p->id_album != id_a){
             p = p->prox_album;
             cont++;         
        }      

        if(p != NULL) return -1;
        return cont;   

}


int buscar_musica(int id_b, int id_a, int id_m, ElemB *lb, ElemA *la, ElemM *lm){
        int valor_busca1 = busca_banda(id_b, lb);
        int valor_busca2 = busca_album(id_b, id_a, lb, la); 
        int i;
        int cont = 0;

        if(valor_busca1 == -1) return -1;
        if(valor_busca2 == -1) return -1;
        ElemB *q;
        q = lb->prox_banda;
        for(i = 0; i <= valor_busca1; i++){
              q = q->prox_banda;
        }
        ElemA *p;
        p = q->albuns_da_banda->prox_album;
        for(i = 0; i <= valor_busca2; i++){
             p = p->prox_album;         
        }
        ElemM *k;
        k = p->musica_do_album->prox_musica;
        while(k != NULL && k->id_musica != id_m){
             k = k->prox_musica;
             cont++;         
        }       

        if(k != NULL) return -1;
        return cont;   

}

.h file

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct musica{
       int id_musica;
       int tempo_musica;
       char nome_musica[30];
       struct musica *prox_musica;
       };      

typedef struct musica ElemM;

struct album{
       int id_album;
       char nome_album[30];
       struct musica *musica_do_album;
       struct album *prox_album;
       };

typedef struct album ElemA;

struct banda{
       int id_banda;
       char nome_banda[30];
       struct album *albuns_da_banda;
       struct banda *prox_banda;
       };       

typedef struct banda ElemB;


ElemB *cria_lista_banda();
ElemR *cria_lista_album();
ElemC *cria_lista_musica();
int incluir_musica(ElemM *lm, ElemA *la, ElemB *lb, int id_m, int tempo, char *nome_m, int id_a, int id_b)
int busca_banda(int id, ElemB *lb);
int buscar_album(int id_b, int id_a, ElemB *lb, ElemR *la);
int buscar_musica(int id_b, int id_a, int id_m, ElemB *lb, ElemA *la, ElemM *lm);