Music is an integral part of every WTA player's tennis life, and especially when they want inspiration and motivation when working out. Most have their earphones in when travelling, and almost as many listen to music when they are training, warming up for matches or in the few minutes before walking out to compete. There are also a small number of players - with Serena Williams among them - who sometimes find they can't get a song out of their head while they are on court. 

As Williams has said, "music gets you in the zone and gets you ready". We've taken a look at the music that the WTA players like listening to during gym sessions and runs, and before practices and matches. 

Caroline Wozniacki

There are some days when the the Australian Open champion isn't quite as motivated as she could be. And those are the days, she has told Women's Health magazine, when she turns to Rihanna, Calvin Harris, Taylor Swift and Justin Bieber to "get me in the mood". "Sometimes I just need a boost and go for something that's a little bit more intense and a bigger beat. And sometimes I feel as though I need to calm down a little but and I go for something slower," the Dane told ESPN. "I always mix it [have the music on shuffle] so then I get surprised."  

Victoria Azarenka

Dancing to music has helped to keep Azarenka in shape. "I love to dance so we try to create dance-like exercises. We always put on music, and we just dance and make it really fun," she told Fitness Magazine. The Belarusian is also one of those players who sings on court: "I sing a lot when I play. I have songs and lyrics in my head sometimes that aren't tennis-related. It's so random. It can go from Rihanna - I love Rihanna - to Sir Mix-a-Lot." Azarenka's love of Rihanna is such that she once planned a duet of the Bajan star's ballad 'Stay' with Serena Williams - but when it comes to working out, she goes with the more uptempo 'Talk That Talk'.

Serena Williams

Before walking out on to court, Williams has been in the habit of listening to 'Flashdance... What A Feeling' by Irene Cara. That song often sticks in her head. "I'm singing a song in my head and it's usually the same song - 'Flashdance'. It's super random but I like the words, that's why - if you break down the words, they're pretty cool," she once told a news conference. "It's empowering. If you break down the words, it's really intense." Williams has also listened to P!nk and Kelly Clarkson when working out. 

Svetlana Kuznetsova

Music can also foster team spirit among players who usually compete against each other - as the Russian Fed Cup team discovered during their victory over Poland in February 2015. Notorious music fan Kuznetsova was the team DJ, as Maria Sharapova hashtagged on Twitter, and the "official song" she chose was 'Santa Lucia' by Ukrainian group Quest Pistols. "Only one good song on Sveta's phone," joked Anastasia Pavlyuchenkova afterwards.

Jelena Ostapenko

Ahead of Ostapenko's stunning victory in last year's Roland Garros final, her coach Anabel Medina Garrigues sensed that her young charge wanted to dance, not talk. So - she wrote in a column for El Español afterwards - Medina Garrigues encouraged the Latvian to put on Luis Fonsi and Daddy Yankee's reggaeton hit 'Despacito' and show off the moves her dance teacher had taught her. This, she said, is when Ostapenko began to relax before her first Slam final.

Naomi Osaka

After a tough first-round win at the 2016 US Open, Osaka was asked what got her through the match. "A Beyoncé song, basically," she told the Tennis Channel. Elaborating to the Japan Times, she said: "I had moments in the tiebreaker and hit some very bad shots. [After the first set] I looked relaxed and I started singing Beyoncé in my head." The 20-year-old is also a fan of Kanye West - or at least the rapper's early albums, calling them "timeless" on Twitter.

Garbiñe Muguruza

"I like listening to really strong songs for motivation for my mind," the Spaniard has said, with her playlist including tracks by David Guetta and Rihanna - but as she told in 2015, her tastes are diverse, ranging from reggaeton to opera.

Andrea Petkovic

One of the biggest music fans on tour, Petkovic told Sport 360 in January that her current musical addictions are Chvrches' cover of Arctic Monkeys' 'Do I Wanna Know?' - "I listen to it every day" - and Frank Ocean's album Blonde. "It makes me so sad, but in a good way, if that makes sense - nostalgic, maybe," she mused.

Daria Gavrilova

"I love songs with a good beat, but all different types of beat. Sometimes I love crazy songs when I'm packing my bags to get all pumped up," she told ESPN. Those include J Balvin and Willy William's reggaeton smash 'Mi Gente', some retro '80s electro courtesy of Eurythmics' 'Sweet Dreams (Are Made Of This)' and up-and-coming Washington rapper GoldLink's 'Herside Story'.

Laura Robson

Robson's taste in the music has attracted "complaints" from fellow gym-goers, she told Women's Health in 2014 - she was playing a mixture of '80s pop such as John Farnham's 'You're The Voice' and rap. The Briton has also explained her workout choices to The Guardian: "If I'm in the weights gym I usually go for rap or rock music; for running it's dance or cheesy pop."

Monica Puig

Last April, the Olympic gold medallist posted a Twitter clip of her impressive weightlifting routine - soundtracked by country singer Gavin DeGraw's 'She Sets The City On Fire'.

Anett Kontaveit

For inspiration, the Estonian plays something retro. "Usually, I just listen to the popular songs they play on the radio, but occasionally I need a song to inspire me, so I pick an old classic from ABBA," she once told ESPN. Appropriately enough, she picked the Swedish group's 'The Winner Takes It All' for her playlist, along with more contemporary tracks such as Avicii's 'Levels' and Major Lazer's 'Know No Better'.