Creating Alternate Feed - repost

I need to create an alternative feed for instalção of wordpress I already own. Unlike the native feed wordpress is the creation of separate entrances. Feed The wordpress native structure is similar to that. example: Sample title Description of the post. Exemple category Example TAGs Link to post I want to transform a custom feed but with functionality identical to wordpress. Sample title Description of the post. Example category Sample Tags Link to post and if possible create other entries tags. I wish that the two feeds function normally.