Florence and the Machine ended a year and a half of touring with a headline set at the British Summertime gigs at London's Hyde Park.
She urged fans to love each other.
"I have been feeling a bit heartbroken recently but tonight I have been feeling so much love," she said.
"I see so much love in each and every one of you, the love you have here I see so clearly, take it out there with you."
See Florence's set list on her Twitter page, external
She also asked the crowd to put their phones down for at least one track.
"This is the end of a year and a half of touring" she explained to the sold out crowd.
"This is the last show, and in that time I've noticed something about myself and wanted to deal with it on stage.
"Instead of looking at where I was, I was looking at my phone, so I was wondering if for one song we could all put our phones away. Don't be that guy filming."
Kendrick Lemar also played during the day
She ended a day that saw sets from Kendrick Lamar, Jamie XX and Blood Orange.
Friday night saw a special co-headline set from Massive Attack and Mercury Prize winners Young Fathers for a special co-headline set.
"To be doing this with Massive Attack is a great honour," Alloysious Massaquoi from Young Fathers told Newsbeat before going onstage.
The idea came about when they were supporting Massive Attack.
"It was a weird thing that they proposed the idea to us," 'G' Hastings adds.
"We were like 'are you sure?'."
Young Fathers, pictured at Glastonbury, appeared on stage with Massive Attack at British Summertime Festival
The performance saw the Scottish trio being part of Massive Attack as well as performing some of their own tracks.
But it was a political message that stood out.
Massive Attack frontman Robert Del Naja called for unity and tolerance in the wake of the vote to leave the EU.
The big screen behind them showed images of men and women with the phrase "we are in this together" - a political slogan, reappropriated.
Elsewhere, British Summertime gave newer artists the chance to perform at Hyde Park.
Shura said she felt guilty about not inviting her parents to her set
The role call of huge artists who have played there was not lost on Shura.
"I feel suddenly feel very guilty for not inviting my parents," she tells us fresh off stage.
"I forced them to go to Glastonbury so I feel like I can't make them do two in a row.
"If I asked them then they would have felt guilt tripped into saying yes and sometimes they probably just want to stay at home with a cup of tea."
The event at Hyde Park continues on Sunday with American singer-songwriter Carole King topping the bill.
Next weekend sees headline performances from Mumford and Sons, Take That with Olly Murs and Stevie Wonder.
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