Yes definitely not CVR, this is LiveATC remember...
You mention TWR frequency,(the recording does not indicate the frequency unless you have found it somewhere) but this controller is dealing with Approach Control procedures involving several aircraft including LaMia. Not normally handled by Tower controllers but can be at non-busy airports. ( But no radar control going on here as I have mentioned before which if true is a little odd. There are several radars covering the Medellin Terminal Area).