Singer and songwriter Madison McFerrin’s rendition of the National Anthem prior to Hillary Clinton’s Tuesday night speech sounded so terrible, CNN’s Anderson Cooper apologized for “audio issues.”

After a two minute version of the National Anthem, Cooper said, “Clearly we had some audio issues there– we were working out there during that.”

Predictably, people on Twitter were not kind.

This is one of the worst renditions of the National Anthem I have ever heard — Ben Jacobs (@Bencjacobs) June 8, 2016

@HillaryClinton you lost my vote by having such a horrible singer butcher the national anthem! #Hillary2016#YesWeCan — dennis gorfain (@DennisGorfain) June 8, 2016

Maybe #HillaryClinton should have heard that national anthem before she let her sing ?!???? — Ray Walker (@raywalker212) June 8, 2016

I’m sorry but this is the worst #nationalanthem I have ever heard in my life pic.twitter.com/dIWdMGgqwx — Treasure♛ (@treasurewilsonn) June 8, 2016

That was the worst national anthem I’ve ever heard @ Hilary’s rally — ugly (@comm0nstale) June 8, 2016

Clinton event national anthem tonight–one of the worst I’ve ever heard. Ugh. Gimme a break. — TR Forrest (@Forrest1966) June 8, 2016

She just destroyed the national anthem! Horrible so flat and out of tune! So embarrassing! pic.twitter.com/5xgtZijLSd — Jared (@TheJaredTyler) June 8, 2016

Follow Steve on Twitter and Facebook