Canadian teenager Bianca Andreescu relaxed her mind with hip-hop before going out on court to beat 23-time grand slam champion Serena Williams in the US Open final.

Andreescu looked utterly unfazed by the occasion, and was pictured singing and swaying her head to the music in the tunnel before heading out on to court while Williams prepared in the background.

The 19-year-old learned meditation techniques from her mother aged 12 and practices yoga to get in the zone, while she revealed this week that her US Open playlist features rappers Playboi Carti and Lil Yachty.

After striding out confidently on court, Andreescu won the first set 6-3 and took a commanding lead in the second, only for Williams to storm back into the match.

But Andreescu kept her composure to finish the job, winning the second set 7-5 to win her first grand slam and complete an astonishing rise up the world rankings this year.

“Last year wasn’t an easy period in my life, I was going through a lot with injuries,” said Andreescu. “I just kept believing in myself I kept working hard and I just kept that momentum and confidence.”

Despite having never made it past the second round of a grand slam, Andreescu arrived at Flushing Meadows with many expecting big things from herself.

“You’re never going to have ups all the time,” she said after the match. “So I think in those moments, you just have to deal with it the best that you can, which is to just keep fighting for your dreams and just stay as persistent and persevere as much as you can.

“I think it builds you as a character.”

US Open 2019 - best pictures Show all 64 1 /64 US Open 2019 - best pictures US Open 2019 - best pictures Day one A plane comes in over the New York City skyline as seen from the Arthur Ashe Stadium AFP/Getty Images US Open 2019 - best pictures Day one The opening ceremony before the match of Serena Williams of the US against Maria Sharapova from Russia AFP/Getty Images US Open 2019 - best pictures Day One Cameron Norrie of Great Britain returns a shot during his men's singles first round match against Gregoire Barrere of France Getty Images US Open 2019 - best pictures Day one Maria Sharapova of Russia returns the ball to Serena Williams AFP/Getty Images US Open 2019 - best pictures Day one Roger Federer of Switzerland throws balls to members of the public after defeating Sumit Nagal AFP/Getty Images US Open 2019 - best pictures Day two Garbine Muguruza of Spain hits a return against Alison Riske AFP/Getty Images US Open 2019 - best pictures Day two Garbine Muguruza of Spain serves against Alison Riske AFP/Getty Images US Open 2019 - best pictures Day two Dominic Thiem of Austria against Thomas Fabbiano of Italy AFP/Getty Images US Open 2019 - best pictures Day three Novak Djokovic of Serbia receives treatment between games against Juan Ignacio Londero of Argentina AFP/Getty Images US Open 2019 - best pictures Day three Novak Djokovic of Serbia celebrates after defeating Juan Ignacio Londero AFP/Getty Images US Open 2019 - best pictures Day three Serena Williams of the US celebrates her wictory against Caty McNally AFP/Getty Images US Open 2019 - best pictures Day three Serena Williams of the United States reacts during her Women's Singles second round match against Catherine McNally Getty Images US Open 2019 - best pictures Day three Roger Federer of Switzerland celebrates after defeating Damir Dzumhur of Bosnia and Herzegovina AFP/Getty Images US Open 2019 - best pictures Day four Taylor Townsend of the US reacts after winning against Simona Halep AFP/Getty Images US Open 2019 - best pictures Day four Coco Gauff of the US reacts to winning her match against Timea Babos of Hungary AFP/Getty Images US Open 2019 - best pictures Day four Alexander Zverev of Germany celebrates after defeating Frances Tiafoe of the US AFP/Getty Images US Open 2019 - best pictures Day five Serena Williams of the United States reacts during of her Women's Singles round three match against Karolina Muchova of the Czech Republic Getty Images US Open 2019 - best pictures Day six Naomi Osaka of Japan consoles Coco Gauff EPA US Open 2019 - best pictures Day six Naomi Osaka of Japan consoles Coco Gauff USA TODAY Sports US Open 2019 - best pictures Day six Rafael Nadal of Spain serves against Hyeon Chung of Korea USA TODAY Sports US Open 2019 - best pictures Day six Rafael Nadal from Spain serves to Hyeon Chung from Korea AFP/Getty Images US Open 2019 - best pictures Day six Hyeon Chung of South Korea hits a return to Rafael Nadal of Spain EPA US Open 2019 - best pictures Day six Gael Monfils of France celebrates after his match against Denis Shapovalov of Canada USA TODAY Sports US Open 2019 - best pictures Day six Nick Kyrgios of Australia reacts vs Andrey Rublev EPA US Open 2019 - best pictures Day six Andrey Rublev of Russia celebrates winning his Men's Singles third round match against Nick Kyrgios of Australia Getty Images US Open 2019 - best pictures Day seven Novak Djokovic retired from his US Open clash with Stanislas Wawrinka due to a left shoulder injury AFP/Getty US Open 2019 - best pictures Day seven Serena Williams of the United States celebrates after winning her Women's Singles fourth round match against Petra Martic of Croatia Getty Images US Open 2019 - best pictures Day seven Roger Federer made light work of David Goffin Reuters US Open 2019 - best pictures Day seven Johanna Konta celebrates beating Karolina Pliskova on her way to the quarter-finals Getty Images US Open 2019 - best pictures Day seven Qiang Wang of China celebrates winning her Women's Singles fourth round match against Ashleigh Barty of Australia Getty Images US Open 2019 - best pictures Day eight Osaka struggled against Bencic AFP/Getty US Open 2019 - best pictures Day eight Osaka waves goodbye to the US Open fans USA Today US Open 2019 - best pictures Day eight Rafael Nadal saw off Marin Cilic to reach the US Open last eight AFP/Getty US Open 2019 - best pictures Day eight Marin Cilic lost to Nadal in four sets after putting up a good fight AP US Open 2019 - best pictures Day eight Alexander Zverev of Germany reacts as he plays against Diego Schwartzman of Argentina AFP/Getty Images US Open 2019 - best pictures Day eight Alexander Zverev receives a code violation during his defeat by Diego Schwartzman Getty Images US Open 2019 - best pictures Day nine Roger Federer of Switzerland hits a backhand against Grigor Dmitrov USA TODAY Sports US Open 2019 - best pictures Day nine Grigor Dimitrov of Bulgaria falls as he plays Roger Federer of Switzerland EPA US Open 2019 - best pictures Day nine Grigor Dimitrov of Bulgaria wins the quarterfinal match against Roger Federer of Switzerland USA TODAY Sports US Open 2019 - best pictures Day nine Roger Federer of Switzerland reacts as he leaves the court after losing to Grigor Dimitrov of Bulgaria EPA US Open 2019 - best pictures Day nine Daniil Medvedev of Russia hits a return to Stan Wawrinka of Switzerland EPA US Open 2019 - best pictures Day nine Daniil Medvedev of Russia (L) hugs Stan Wawrinka of Switzerland after defeating him in their Men's Singles Quarterfinal match AFP/Getty Images US Open 2019 - best pictures Day nine Daniil Medvedev of Russia is interviewed on court after beating Stan Wawrinka USA TODAY Sports US Open 2019 - best pictures Day nine The sun sets behind the Manhattan skyline as Serena Williams of the United States faces Qiang Wang of China in a quarterfinal match USA TODAY Sports US Open 2019 - best pictures Day nine Serena Williams of the US reacts after defeating Qiang Wang of China during their quarter-finals round match EPA US Open 2019 - best pictures Day nine Serena Williams, of the United States, returns a shot to Qiang Wang, of China, during the quarterfinals AP US Open 2019 - best pictures Day 10 Rafael Nadal celebrates his victory over Diego Schwartzman in the US Open quarter-finals AFP/Getty US Open 2019 - best pictures Day 10 Matteo Berrettini celebrates after beating Gael Monfil to reach the semi-finals Reuters US Open 2019 - best pictures Day 10 Bianca Andreescu is through to the semi-finals of a Grand Slam for the first time Getty US Open 2019 - best pictures Day 10 Belinda Bencic reached the last four of the US Open Getty US Open 2019 - best pictures Day 11 Serena Williams came past Elina Svitolina to reach yet another US Open final Getty Images US Open 2019 - best pictures Day 11 Bianca Andreescu beats Belinda Bencic in the semi-finals Getty Images US Open 2019 - best pictures Day 12 Rafael Nadal reaches the final where he will play Daniil Medvedev Getty Images US Open 2019 - best pictures Day 13 Bianca Andreescu arrives on court listening to music before the final Getty US Open 2019 - best pictures Day 13 Bianca Andreescu reacts as she wins against Serena Williams of the during the women's singles final – her first grand slam title AFP/Getty Images US Open 2019 - best pictures Day 13 Bianca Andreescu of Canada reacts as she wins against Serena Williams of the US during the Women's Singles Finals match AFP/Getty Images US Open 2019 - best pictures Day 13 Bianca Andreescu poses with the trophy after she won against Serena Williams AFP/Getty Images US Open 2019 - best pictures Day 14 Bianca Andreescu of Canada poses with her trophy at the Top of the Rock in Rockefeller Center Getty Images US Open 2019 - best pictures Day 14 Daniil Medvedev of Russia wipes his face while playing Rafael Nadal AFP/Getty Images US Open 2019 - best pictures Day 14 Rafael Nadal, of Spain, reacts after defeating Daniil Medvedev, of Russia, to win the men's singles final of the U.S. Open AP US Open 2019 - best pictures Day 14 Rafael Nadal of Spain reacts after defeating Daniil Medvedev of Russia during the men's final match EPA US Open 2019 - best pictures Day 14 Rafael Nadal of Spain reacts during the men's Singles Finals match against Daniil Medvedev AFP/Getty Images US Open 2019 - best pictures Day 14 Rafael Nadal of Spain (L) celebrates his victory over Daniil Medvedev of Russia (R) AFP/Getty Images US Open 2019 - best pictures Day 14 Rafael Nadal of Spain holds the trophy after his win over Daniil Medvedev AFP/Getty Images

Dropping only two sets in the entire tournament, the tenacious, power-hitting Andreescu barrelled through the competition at Flushing Meadows, showing no sign of a slowdown from a blockbuster summer that included wins at Toronto and Indian Wells.

“I don’t think I’ve lost a match since March, so my confidence is sky-rocketing right now,” Andreescu told reporters. “I just don’t want to take anything for granted because there’s going to be weeks where you’re going to lose. So right now I’m just on cloud nine.”

Bianca Andreescu reacts as she wins against Serena Williams of the during the women’s singles final of the 2019 US Open (AFP/Getty Images)

Ending 2018 with a year-end ranking of 178, she had rocketed to 15th when she arrived at the year’s final major, a meteoric rise that stunned even her coach.

“When I play my game I think nobody really likes that because I play a lot different than other players on tour,” Andreescu said. “I like to change up the rhythm and I’ve always been like that and I just kept improving it.”

Andreescu, who said she is a voracious reader of Tony Robbins and other self-help authors, acknowledged that much of her improvement had come from developing mental discipline.

“I don’t think I was ever as composed as I am now, or even a year ago,” said Andreescu. “I would get really down on myself and I would get very negative thoughts going through my mind. I would smash racquets. I’d just yell at myself during matches.”