Top of the Pops, 22nd January 2015

It's their fifth week at number one and glory be, Mark Ronson and Bruno have made it into the studio, with electrifying results. At the other end of some imaginary scale, friends of the show Sam Smith and George Ezra team up for a joint performance of two of their long-running faves.

Speaking of singer/songwriters, Hozier strides to his highest chart peak yet and newcomer James Bay rides the crest of his Brits wave. And there's even newer new blood from fellow start-of-year accoladees Years and Years and likeable American dark horses Echosmith.

Debut: Echosmith.

Years and Years - Desire

Up 12 to number 46

Echosmith - Cool Kids

High Climber - Up 11 to number 28

James Bay - Hold Back The River

Up 5 to number 31

Hozier - Take Me To Church

Up 2 to number 3

Alesso feat. Tove Lo - Heroes (We Could Be)

Up 2 to number 7

George Ezra vs Sam Smith - Budapest / I'm Not The Only One

Up 1 to number 17 / Up 3 to number 21

Avicii - The Nights

Highest New Entry - In at number 16

Mark Ronson feat. Bruno Mars - Uptown Funk

Fifth week at number 1

PRESENTER: JB Gill