belongsTo(Album::class); } public function artists(): BelongsToMany { return $this->belongsToMany(Artist::class, 'artist_track'); } public function genres(): BelongsToMany { return $this->belongsToMany(Genre::class, 'track_genre'); } public function likedBy(): BelongsToMany { return $this->belongsToMany(User::class, 'likes'); } }