Madonna has played an intimate live gig back at the north London club where she first wowed British fans 22 years ago.
Madonna stuck to her recent purple colour scheme for her Koko gig
The singer played five songs at the Koko Club - formerly the Camden Palace - where she gave her first live UK performance in 1983.
The gig marked the release of her new album Confessions On A Dance Floor.
She appeared before an audience of about 1,000 fans, including 200 who had queued since the previous day to claim free tickets left on the door.
When Madonna made her debut at the club she was an unknown singer who had just released the underground US club hit Everybody.
Now, with her 11th UK number one Hung Up, the 47-year-old is the world's biggest female artist, selling more than 200 million albums.
She told the audience: "The last time I played Camden Palace was 22 years ago.
"It was my first show in London and I've got to tell you it's so great to be back."
The exclusive nature of the gig sparked a scramble for tickets among her fans. Most tickets were distributed through radio competitions but a final 200 were held at the venue.
MADONNA'S KOKO SETLIST
I Love New York
Let It Will Be
As soon as the announcement was made, fans - some of whom travelled specially from the US or across Europe - started gathering outside the venue and remained in line overnight despite some bitter November temperatures.
Throughout their wait, the fans were given three wristbands and a voucher at regular intervals and only those who had all four were able to claim a ticket when the doors opened.
Not all those who attended the mini concert had to wait in line or take their chance in radio phone-ins. TV presenter Chris Evans, Bob Geldof and his daughter Peaches, designer Stella McCartney, Pet Shop Boy Neil Tennant and Pop Idol winner Will Young were among the audience.
To start her show, Madonna emerged from a giant glitter ball to sing first number Hung Up, dressed in an all-purple ensemble of jacket, velvet pedal pushers and knee-high boots.
The jacket was soon discarded, revealing a tight purple vest top underneath as the newly restyled disco queen accompanied her songs with frenetic dance routines.
She ended the set by referring back to that less-heralded first appearance with a rare performance of Everybody.
Madonna's latest album, Confessions on a Dance Floor, released on Monday, marks a return to her disco roots in its musical style.
According to music retailer HMV, the album is outselling the current number one, Westlife's Face to Face, by a margin of two-to-one and looks set to top the chart on Sunday.
Hung Up is also likely to remain top of the singles chart for a second week, HMV said.
A documentary, following her 2004 Re-Invention tour, will be shown on Channel 4 next month on 1 December and repeated on digital channel E4 eight days later.