Taylor Swift is rocking Los Angeles for four sold-out shows at the Staples Center, and on her first night she opted to pay homage to two hometown heroes, the Beach Boys and Gwen Stefani.

"I think the first thing that comes to mind when I think of California music is the Beach Boys," the country star said before launching into the 1966 classic. Swift performed a simple acoustic version of the 'Pet Sounds' track, which is regarded as one of the greatest songs of all time.

While the song is almost four times as old as the average Swift fan, the singer encouraged the audience to sing the chorus with her. Then the 21-year-old segued into a rendition of 'The Sweet Escape' by Stefani, who Swift says also comes to mind when thinking about California music.

Swift has been covering the likes of Eminem, Justin Bieber, Pink and more while on her epic North American run. Most recently, she made the first of her LA dates extra special by bringing Bieber on stage to perform 'Baby,' and collaborating with Jason Mraz on 'I'm Yours.'

Swift is set to finish out her four-night stint on Saturday and Sunday before heading back on the road for the remainder of her Speak Now tour, which will make its final stop in New York City on Nov. 22.

Watch Taylor Swift Cover the Beach Boys' 'God Only Knows' and Gwen Stefani's 'The Sweet Escape'