London, UK - Kate Bush has said it is "shocking" and "exciting" that a new young audience has discovered her song Running Up That Hill, after it was featured in the fourth season of Stranger Things.

The new-wave track has experienced a global resurgence in popularity and has gone viral – showing up as the soundtrack for TikToks and sparking covers galore from even huge music stars.

On Friday, it broke a trio of records as it claimed the top spot on the UK singles chart, over artist Harry Styles.

Among the achievements was the longest time taken for a song to reach number one, as it secured the place 37 years after it was first released in 1985.

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Speaking to Emma Barnett on BBC Radio 4's Woman's Hour, Bush said: "It's just extraordinary. I mean it's such a great series, I thought that the track would get some attention.

"But I just never imagined that it would be anything like this. It's so exciting. But it's quite shocking really, isn't it? I mean, the whole world's gone mad."

Bush said she's elated a new generation will get to hear her tunes: "What's really wonderful, I think, is this is a whole new audience who, in a lot of cases, they've never heard of me and I love that.

"The thought of all these really young people hearing the song for the first time and discovering it is, well, I think it's very special."

Running Up That Hill also claimed the number one spot in Australia, New Zealand, Sweden, and Switzerland since the show aired, and achieved a new peak in the US charts at number four.

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The British singer-songwriter also secured the title of the longest gap between number one singles, as her only other chart-topping moment was 44 years ago with her debut single, Wuthering Heights, in 1978.

And to round off her trio of records, at 63 Bush became the oldest female artist to score a UK number one.

Bush admitted she had not listened to the track for a "really long time" when the show's creators asked if they could feature it, as she said she does not go back and listen to her old music.

She explained: "When things like this come along, I'm normally involved in something like maybe doing an edit or revisiting the track for some kind of other reason, I'm working on it. So yeah, I hadn't heard it for a really long time."

The singer revealed that she was already a fan of the hit Netflix show and thinks the series has put the song in a "really special place" in the series.

In the show, Max Mayfield, played by Sadie Sink, is heard listening to the song on her Walkman as a means of grounding herself to the real world.

Bush said: "I thought, what a lovely way for the song to be used in such a positive way, as a kind of Talisman almost really for Max. I think it's very touching, actually."

As new fans discover the song, she said she likes people to "take from it what they want."

However, she revealed that the original song idea is about a man and a woman who swap with each other to "feel what it was like from the other side."