21 June 2013
Last updated at 11:26 ET
Amadeus Leopold has been one of the many performers at the annual Meltdown festival at the Southbank Centre in London. The 10-day event includes concerts, DJ sets, talks, films and the visual arts.
The South Korean classical violinist and vocalist's spectacular performance included 1987, his love letter to Yoko Ono.
Meltdown curator Ono, who turned 80 this year, appeared on stage at the start of the annual festival, now in its 20th year.
She kicked off proceedings with some of her songs. Ono also launched an extensive film programme she has put together, including rare footage of her and John Lennon.
Ono's opening show was with her Plastic Ono Band, led by her son, Sean Lennon.
Legendary American rock band Iggy and the Stooges were one of the headline acts chosen by Ono in a festival imbued with punk spirit.
Iggy's dynamic energy captivated the audience from the moment he bound on stage to the opening riff of Raw Power to his later invitation to come up and dance with the band.
The hotly tipped all-female punk band Savages, whose lead singer is Jehnny Beth, were the support act for Iggy and the Stooges.
One of the highlights of Meltdown was punk icon Siouxsie in her first live show for nearly five years.
Because of overwhelming demand for tickets, the former Banshees frontwoman added a second show.
Viv Albertine, best known as the guitarist for the Slits, the influential all-female English punk band, supported Siouxsie.
The festival also included the only UK show this year from Oscar-nominated composer Ryuichi Sakamoto (above) and German producer Alva Noto.
The pair, who have collaborated for more than a decade, performed an experimental project in which a visual display pulsated to the music.