Netflix viewers have been left in shock after discovering where it’s loading sound comes from.

The streaming service launched in 2007, with it’s ‘tudum’ sound which plays at the start of every film and show being introduced in 2015.

Now, a decade on, many have found out the iconic sound seems to have come from an iconic show that ended in controversy.

Hitting screens in 2013, House of Cards was the first TV series produced by a studio for Netflix.

The political thriller followed politician Frank Underwood (Kevin Spacey) who does whatever it takes to attain more power.

It was a critical success, picking up 33 Emmy Award nominations and 8 Golden Globe nominations.

But after Spacey was accused of sexual misconduct, he was fired from the series in 2017. It ran for one more season before it was cancelled.

However it was the second season finale, which aired in 2014, which inspired the ‘tudum’ sound which is still used today.

In the scene Frank bangs his wooden desk twice with his right fist, with the sound as the credits starting to roll being near identical. A year later the tudum sound was introduced.

This week user coopercooperco posted on X: ‘It’s so funny that Netflix now claims a different, brand safe origin for their “tudum” sound to distance themselves from Kevin Spacey/House of Cards despite it clearly being a slightly modified version of how Season 2 ends.’

‘Lollll I actually never noticed this is where it was from,’ Jermaine posted on X.

‘I was not familiar with this lore,’ Manu shared.

‘New favourite fun fact just dropped,’ another added.

Despite the obvious similarities, Netflix has previously distanced itself from claims the sound was taken directly from House of Cards.

Netflix’s vice president of product Todd Yellin once explained how he teamed up with Oscar-winning sound editor Lon Bender to create a beat to introduce shows and films on the streaming service.

According to Audiospheric, they had around 30 ideas, but one was very out there.

‘I liked the sound of a goat. It was funny. It was original. It was our version of Leo the Lion [MGM’s intro sound],’ Yellin said on the Twenty Thousand Hertz podcast.

However, after consulting his 10-year-old daughter he went with a sound that was created by a wedding ring knocking on a piece of furniture and mixing it with a deeper anvil sound, some muted drum hits and reversed guitar chords.

Despite this explanation, in 2023 Spacey said the sound definitely came from his show.

‘You know what that is? [bangs coffee table twice] Boom, boom. According to your research, my influence is felt every time every customer opens the app,’ he said on Fox News.