Among the chart-topping artists at the concert on the Granaries on Tuesday night were Raye (left) and DNCE.

Cleansing Department employees did an all-nighter yesterday to clean up the mess left by revellers who attended the Isle of MTV annual concert.

A total of 14 tonnes of waste was collected from the Granaries in Floriana, which was covered in plastic bottles, cups, take out plates, residue of fast food and other litter.

All the department’s 35-strong team worked through the night to clean up the rubbish left behind by the estimated 50,000 revellers who descended on the Granaries for the show.

It was streamed live on social media and is expected to be broadcast in more than 20 countries, with an expected reach of some 40 million followers.

The free concert, which attracts many tourists to Malta each year, starred a line-up of four international acts – DNCE, The Chainsmokers, Jonas Blue and Raye.

The Chainsmokers praised the organisers of the event and said they wished they could stay on a bit longer than they did.

Over the years, chart-topping artists have taken to the Isle of MTV stage, including Snoop Dogg, Enrique Iglesias, Black Eyed Peas, Lady Gaga, Maroon 5, Jason Derulo, Martin Garrix, David Guetta, Akon, One Republic, Flo Rida, Rita Ora and Jessie J.

Floriana mayor Davinia Sammut Hili hailed the department’s workers for their effort to have the streets cleaned by 5.30am.

Tight security was in place during the Isle of MTV concert in Floriana on Tuesday.

Jonas Blue