What's a capo? Taylor Swift asks for one during her acoustic set in Hamburg

Taylor Swift has completed 120 acoustic sets on her massive Eras Tour, but not without a couple of accidental errors.

In Hamburg, Germany, on Tuesday she picked up her guitar and started strumming when she spoke to her production team.

"I thought there was supposed to be a capo on this one to be honest, but I don't have one," she said in a tangerine dress. "I really do think there was supposed to be a capo on this. One second, we're just gonna get me one."

A capo is a clamp that fastens across guitar strings to raise the tuning.

"It's tuned up a half step. I don't need one," Swift corrected to the Volksparkstadion audience before dashing into a mashup of "Teardrops On My Guitar" from her debut album and "The Last Time" from "Red (Taylor's Version)."

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As she sat down at the piano, she beamed, "So these next ones I've never played live."

The singer combined "We Were Happy" from "Fearless (Taylor's Version)" and "Happiness" from "Evermore." Her ninth era is the sixth album to fall with Swift playing every song from "Evermore." She has also played every song from her debut album, "Speak Now (Taylor's Version)," "1989 (Taylor's Version)," "Folklore" and "Midnights" during the Eras Tour. The singer-songwriter has 14 songs left to play from her 11 studio albums.

Swift has one more show in Hamburg before traveling to Munich, Germany, for two shows this weekend.

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