Earlier this month, guests at the Hilton Fort Collins hotel in Colorado were treated to a one of a kind performance that they will certainly never forget.

The Colorado All-State Choir is made up of hundreds of high school students from all over the state, and they had all descended on the hotel for their yearly festival. One of their traditions is to kick off the festival each year by performing on the hotel’s balconies, and this year, they did so by performing the gospel song, “Down In The River To Pray.”

The students’ voices sounded extremely angelic as they rang out into the atrium. The students were directed by their conductor, who stood on the ground floor beneath them.

The acoustics of the hotel gave their voices a unique sound the likes of which we have never heard before. It should come as no surprise that many look forward to this festival all year!

Chris Maunu, a choir director at Arvada West High School who had some of his students take part in the performance, shared the video to Facebook, where it has been viewed over nine million times!

“Amazing high school students sing ‘Down to the River to Pray’ from hotel balconies!!!” he wrote alongside the video. “The singers are the treble ensemble of the Colorado All State Choir, which includes 34 of my finest Arvada West Choir students and awesome students from across the state!”

“Beautiful! Sounds like angels,” one social media user commented, with another adding, “Gives me goosebumps every time I watch this. Amazing.”

Check out the performance for yourself below!