Footage shows Fox Theatre balcony bouncing as excited fans dance at Gunna's Atlanta concert - but venue operator says it's no cause for alarm

A heart-stopping video shows the moment Detroit's Fox Theatre balcony bounced as excited fans jumped up and down at rapper Gunna's concert - but venue operators have offered an assurance there's no cause for alarm. 

Music lovers could be seen dancing and waving their phones about as the hip-hop artist performed for a packed audience on Monday night. 

The footage, shared by the rapper on his Instagram, shows the balcony of the nearly 100-year-old theatre bending as worried fans stood below. 

Since going viral, the video has left many viewers scared and worried about the structural integrity of the theatre. 

Music lovers could be seen dancing and waving their phones in the air with the flashlights turned on as the hip-hop artist performed his song 'fukumean' for a packed audience on Monday night

The footage shows the balcony of the nearly 100 year old theatre shake and bend as worried fans standing below look around in concern

Rapper Gunna shared the video on his Instagram, which has 2.7 million views as of Wednesday morning

One viewer on Instagram commented: 'Nah that joint is about to collapse.' Another wrote: 'Smh they need to check the stability of that balcony .. so many people could get hurt or even die.'

One user also joked: 'Lol yeah I would've took a bathroom break once I noticed sh!t shaking'. 

Another user vocalized what many were thinking and wrote: 'I would have been scared out my mind up there lol.' 

The video has 2.7 million views on Instagram as of Wednesday morning. 

But venue operators Ilitch Sports and Entertainment soon released a statement assuring people that theatre has been built to withstand such dancing and regular checks were taking place. 

'The type of movement seen at the recent Fox Theatre concert is common and expected on free-standing balcony structures, to support audience members actively dancing, as shown during last night's concert. 

The Fox Theatre Detroit was opened in 1928 as the flagship movie palace for the Fox Theatre Chain. It was designed by architect Charles Howard Crane and has a capacity of 5,048 seats

'This capability is an integral part of the balcony's structural engineering design. Regular inspections, most recently conducted in April, are completed to ensure the integrity and safety of the structure,' the statement read. 

The Fox Theatre Detroit was opened in 1928 as the flagship movie palace for the Fox Theatre Chain. It was designed by architect Charles Howard Crane and has a capacity of 5,048 seats. 

Last year, die-hard Taylor Swift fans caused a 2.3 magnitude earthquake in Los Angeles when performed at the SoFi stadium. 

It marked the second 'Swift Quake' on the West Coast, after Seattle, Washington experienced its own earthquake from her Eras tour concert the month before. 

Scientists monitored quake meters from roughly 5.5 miles from the Stadium and used spectrograms - a graph that showed the signal intensity or loudness of a song.

Taylor Swift's Eras tour set off a 2.3 magnitude earthquake in both Seattle and Los Angeles last year

Researchers originally thought the earthquake activity was caused by the sound systems, not the fans and conducted tests to determine which one was at fault

They found that each Swift song 'had a distinct tremor signal.'

'Researchers were able to identify 43 of the 45 songs played within the recorded spectrograms,' the study said.

The spectrogram revealed that while all songs did have a seismic impact, Swift's 'Shake It Off' song had the largest magnitude of 0.85.

'Keep in mind this energy was released over a few minutes compared to a second for an earthquake of that size,' said Tepp.

'Based on the maximum strength of shaking, the strongest tremor was equivalent to a magnitude -2 earthquake,' she added.

Tepp, who is also an amateur guitarist, said that when she and her team documented their initial results, her 'gut feeling was that if you have a harmonic signal that is nice like these, it had to be from the music or the instruments or something.'

Instead, the researchers found it was the tremors from the crowd moving to the beat of the 'Karma' singer's hit music.

They experimented by playing songs on a speaker next to the motion sensor and jumping up and down next to the sensor while Swift's song 'Love Story' played.

Tepp also tried a separate experiment where she plugged her bass guitar into the speaker and played out a repetitive beat.

To Tepp's surprise, the bass guitar didn't create a harmonic signal on the sensor but found that jumping around to 'Love Story' was the culprit.

'Even though I was not great at staying in the same place - I ended up jumping around in a small circle, like at a concert. I was surprised at how clear the signal came out,' Tepp said.

The researchers compared their findings to other concerts and found the other summer headliner - Metallica - had the weakest signals from each concert, further leading them to believe it was the fans jumping and moving at the Swift concert that caused the 2.3 magnitude earthquake.