The 22 000 strong crowd chanted, swayed their hands, screamed and even danced on the Porta-loos - all clear proof that Metallica rocks.
This weekend's Coca-Cola Colab Massive Mix saw 12 hours of rock and roll and electronica complete with ear-shattering sound, heavy guitar rhythms and wild drumming.
Billed as the biggest international music festival South Africa has ever seen, the main stage at Green Point Stadium played host to 11 live acts, including South Africa's Arno Carstens, Flat Stanley and controversial Afrikaans rockers Fokofpolisiekar.
Expat band Seether, which started off on local soil as Saron Gas, and American band Collective Soul joined local group Prime Circle and crowd favourite Simple Planof Canada.
The electronica stage, which opened at 6pm, saw the smaller crowd waiting in anticipation for club genius Fatboy Slim to take to the stage.
The electronica concert also saw revellers bumping to the beats of the Audio Bullys, Iridium Project, Stereo MCs and Goldfish. Fatboy Slim didn't disappoint, keeping the growing crowd dancing wildly for the duration of his two-hour set.
After the concert, revellers could be seen hobbling out in different states of disrepair - a sure sign that 12 hours of jostling, jumping and headbanging is no joke.
Graydon Reynolds, 32, of Durbanville was still suffering on Sunday.
Reynolds, who said yesterday his legs were hurting, had been apprehensive about attending the concert after newspaper reports of poor organisation at the Johannesburg concert where fans were left parched when drinks ran out halfway through the concert.
Reynolds, who had arrived around noon and stayed for the entire show, said it was well worth it.
"I came to see Metallica, but the other bands were really good. Simple Plan and Seether were particularly good."
He added that he felt a bit disappointed because some of the South Africa acts lacked the energy of the international bands.
Richard Wienberg, 29, a South African who now works in the UK, said the concert was on a par with international events.
Wienberg, who was part of the thousands of party animals who knew the Metallica songs word for word, said the concert was well organised.
Between mouthing the words to Metallica hit Fuel, Wienberg shouted: "I'm having an awesome time.
"I've been to a lot of concerts and the sound at this one was great. It is a bit smaller than UK events, but it was well attended."
Cape Town disaster management spokesman Wilfred Solomons said there had been no major incidents at the concert.
Organisers had received noise complaints regarding the electronica stage, which was on an open field next to the stadium, and sound levels were reduced.
In an incident outside the stadium, a 20-year-old woman was assaulted. It is not known whether she had attended the concert.
Police spokeswoman Bernadine Steyn confirmed that the woman had been assaulted outside the stadium at around 9.40pm.
The woman, from Table View, had been taken to hospital with "head and face injuries".
Steyn said she had been kicked and "beaten with a blunt object".
"A 22-year-old man was arrested on the scene and he will be appearing in the Cape Town Magistrate's court," said Steyn.