Taylor Swift Powers Through London Concert After Technical Difficulties

Taylor Swift powered through her London show Monday and put on a killer performance before a star-studded crowd -- despite technical difficulties with her equipment.

The pop superstar hit the stage for her seventh night at Wembley Stadium as part of her "Eras" tour – but, at one point, Taylor's piano experienced a breakdown as she sat in front of it.

Check out the video ... Taylor called over a stagehand to fix whatever the problem was, and he partially removed the top portion of the piano to take a look inside.

He tinkered a bit with the wires before putting the lid back on as Taylor seemed more than satisfied, thanking the stagehand and letting out a high-pitched laugh.

Then she addressed the crowd and went into a little speech about the rain ... officially labeling the concert a "rain show" because the downpours lasted more than 6 minutes.

But, it didn't seem like the bad weather was much of a factor and it certainly didn't hamper the show.

Meanwhile, the packed audience loved every moment of it, including all the famous people who attended, namely Channing Tatum and Zoe Kravitz . Taylor's ex Taylor Lautner and his wife – who's also named Taylor – were enjoying all the music as well ... this comes after "Twilight" costar Robert Pattinson got a shout-out at the show.

SWIFT AT WEMBLEY STADIUM

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But, Taylor's boyfriend, Travis Kelce , was absent, although he popped up at her first Wembley Stadium concert in June. The Kansas City Chiefs tight end was a real hit with all the "Swifties," mingling with them and signing autographs.