Sam Smith and Alicia Keys have joined forces for a duet of Smith’s ‘I’m Not The Only One’ – watch it below.

Smith was celebrating the 10th anniversary of his debut album ‘In The Lonely Hour’, which went on to make Smith the only artist to sell one million albums in the US and UK.

To commemorate the anniversary, Smith hosted a karaoke party at NYC’s gay bar Julius’, with drag queen Lady Bunny serving as the night’s emcee and DJ. Smith also unveiled a surprise duet with Alicia Keys, which they called “a dream come true.”

In response, Keys said: “This is amazing. Can you believe we never did this before? Except for right now? That’s crazy!”

The pair went on to sing Smith’s smash hit ‘I’m Not The Only One’, which would eventually peak in the UK Charts at number three – take a look at the collaboration below:

[embedded content]

NME saw Smith perform live in London last year, rating their performance a full five stars: “Smith has delivered a beautifully designed show that echoes their creative evolution from lovelorn balladeer to something edgier and more transgressive. And the multigenerational crowd stays with them to the finish. Smith’s musical metamorphosis probably isn’t complete yet, but for now, this live triumph feels like a new high watermark.”

Meanwhile, Alicia Keys recently starred as one of Usher’s guest performers for his Super Bowl performance. She began by performing a clip of her own song ‘If I Ain’t Got You’ before Usher joined her to deliver a rendition of their 2004 collaboration ‘My Boo’.

She also surprised London fans last year in December with a 10-minute performance at St. Pancras Station, playing classics such as ‘Empire State of Mind’, ‘If I Ain’t Got You’ and ‘No One’ as well as her latest single, ‘Lifeline’.

Her last full-length album ‘Keys’ garnered three stars from NME: “With some judicious pruning and sharp sequencing, any Keys fan should be able to carve out a pretty satisfying playlist. So, in its own accidental way, it’s a double album that works perfectly for the streaming era.”

In other news, the BBC have promised Sam Smith’s Proms performance will be “entirely appropriate” after past ‘Satanic’ backlash.