source: app/Models/Genre.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Genre extends Model
{
    use HasFactory;

    protected $table = 'genres';

    public $timestamps = false;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name',
    ];

    public function artists(): BelongsToMany
    {
        return $this->belongsToMany(Artist::class, 'artist_sings_genres', 'genre_id', 'artist_id');
    }
}