The 34-year-old pop superstar was performing a mashup of 'Getaway Car' and 'Out of the Woods' at the Stadio Giuseppe Meazza on Sunday (14.07.24) - but her piano wasn't having it.
She quipped in a clip from the moment shared to TikTok: "We have finally broken this thing".
Fortunately, a crew member managed to fix the instrument, and after she finished her performance, she closed the lid and said: "Oh, I did it!".
Taylor recently shared how she has had "so many firsts" on the 'Eras' tour.
The Grammy winner wrote on Instagram: "The Eras Tour has brought so many firsts with it... for example, I'd never been to Switzerland before. This place is stunningly beautiful and I loved playing for those 2 wonderful crowds in Zurich. Pretty wild to think we only have 7 cities left on the European leg of the tour. Up next is a city I've been looking forward to playing for so long: Milan!!".
Meanwhile, Taylor is wanted for a collaboration with Nelly Furtado.
The 'I'm Like a Bird' hitmaker, 45, got Australian EDM star Dom Dolla, 32, to produce the unnamed track she penned with Taylor in mind, who happens to be friends with the 'Love Story' hitmaker's NFL star boyfriend Travis Kelce, also 34.
Speaking on 'Extra', she spilled: "I have a song for Taylor".
"Dom is friends with Travis, so let's get it poppin'! We want Taylor on it!".
Nelly presented the 'Shake It Off' hitmaker with the Song of the Year prize for 'Anti-Hero' at the 2023 MTV VMA Awards, and she found it so "surreal" that she is a fan of her music.
She said: "It's kind of surreal for me".
"I take these long breaks away from music and sometimes I feel like a music librarian trapped in a pop star's body, so every time I come back out from the woods, I'm like 'I'm back from the woods! I'm back from my cave!'".
"I meet other artists and they like my music, like a Taylor Swift, it's kind of like, 'Oh f***, that's cool!".
"'Really, you were singing my song at a party?' You kind of forget that you've been around awhile".
She gushed: "She's an icon!".
"That it's such a beautiful flow of life to know that your songs made an impact 20 years later Because you second guess yourself and you go, 'Oh, maybe it was just a thing, a trend.' But then when you see new generations enjoying your music, it becomes very real".