HTML sort when building table with firebase call

I´ve sorted the table on this situation:

$("#Btn").click( 

function() {

var ref = firebase.database().ref().child("songs").orderByChild("property").limitToFirst(5);
ref.on("child_added", snap => {

  var song = snap.child("nameSong").val();
  var artist = snap.child("nameBand").val();
  var property =  snap.child("property").val();
  var idSong = snap.child("idSong").val();




  $("#table_body").append("<tr><td>" + artist + "</td><td>" + song + "</td><td>" + property + "</td><td>" + idSong + "</td></tr>");


});

But I need to show only when a child is matched the variable fromGarito, like this:

$("#Btn").click(

function() {

var fromGarito;
var user = firebase.auth().currentUser;

if (user != null) {
  fromGarito = user.uid;
}
var ref = firebase.database().ref().child("songs").child(fromGarito).orderByChild("property").limitToFirst(5);
ref.on("child_added", snap => {

  var song = snap.child("nameSong").val();
  var artist = snap.child("nameBand").val();
  var property =  snap.child("property").val();
  var idSong = snap.child("idSong").val();

  $("#table_body").append("<tr><td>" + artist + "</td><td>" + song + "</td><td>" + property + "</td><td>" + idSong + "</td></tr>");
});