Each year, the festival chooses an established music artist or act to direct the event. This year it is intended to reflect the musicians, performers and thinkers who have helped shape the life and art of the Mercury Award-winning band's frontman.
The event will see very rare live performances from singer Elizabeth Fraser on August 6 and 7. The Scottish singer has lent her stunning voice to projects with Massive Attack, Craig Armstrong and Peter Gabriel in recent years, but these will be her first full shows since she left the Cocteau Twins in 1998.
Another rare event will be Marc Almond performing Marc and The Mambas' groundbreaking 1983 release Torment and Toreros on August 9.
Other performers include: Diamanda Galás, Janine Rostron (aka Planningtorock) and Light Asylum on August 1; Laurie Anderson on August 2; CocoRosie on August 4; Buffy Sainte-Marie on August 7; Joey Arias on August 8; The Voluptuous Horror of Karen Black and Vaginal Davis with Tenderloin on August 10; and William Basinski on August 12.
Hegarty said of his lineup: "I dreamed of assembling a constellation of courageous artists, all of whom have used their platforms as cultural producers to challenge us. They have exhibited a ferocity in their pursuit of beauty, and, falling like a guillotine behind it, justice."
The event runs from August 1 until August 12. Tickets go on sale to Southbank Centre members at midday on May 8, and to all at midday on May 10. They can be purchased from the website www.southbankcentre.co.uk/meltdown.
Watch Elizabeth Fraser perform 'Teardrop' with Massive Attack below: