Sam Smith + Ed Sheeran = Too Amazing For Words!

Smith shocked concertgoers in Manchester, UK on Wednesday when he brought Ed Sheeran out to sing his hit song "Stay With Me." It only took fans a fraction of a second to go crazy, cheering wildly for the surprise duet.

In a video of the Oct. 29 performance at Albert Hall, Smith can be seen chuckling as Sheeran croons out a verse of the song, which is nearly drowned out by the screams of admirers in the crowd.

Sheeran has previously covered Smith's "Stay With Me" in a performance for BBC 1 Radio's Live Lounge.

It's no mystery why Sheeran, 23, and Smith, 22, would admire each other's work. Both British singers are known for crooning heart-felting ballads about love and heartbreak. Additionally, "Stay With Me" is definitely a track that suits both of their voices.

Earlier this year, Sheeran and Smith made history they earned the top two spots, respectively, on the Billboard album charts. This feat had not been accomplished by British artists since Eric Clapton and Sting went one and two in the U.S. in 1993.

Indeed, Sheeran's album "X" (pronounced "multiply") and Smith's album "In the Lonely Hour" have taken over airwaves and speakers around the world.

Sheeran is currently touring around the United Kingdom and Europe through the upcoming winter months. The "Thinking Out Loud" singer is also promoting his new book, "Ed Sheeran: A Visual Journey," which hit shelves on Oct. 9.

Smith is also on tour in the U.K. and other parts of Europe through the beginning of December. In January, he will kick off a North American tour, which will take him through the first part of 2015.