SAe-PHP-S2/application/controllers/Artistes.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Artistes extends CI_Controller {

	public function __construct(){
			parent::__construct();
			$this->load->model('model_music');
			$this->load->library('session');
	}
	public function index(){
			$genre = $this->input->get('genre');
			$order = $this->input->get('order');
			$artists = $this->model_music->getArtists($genre, $order);
			$genres = $this->model_music->researchtype();
			$this->load->view('layout/header',['genres'=>$genres]);
			$this->load->view('layout/getter', $this->session->userdata('logged_in'));
			$this->load->view('artists_name',['artists'=>$artists]);
			$this->load->view('layout/footer');
	}

}