look glastonbury
At Glastonbury in 2010 the act billed as TBC was Thom Yorke and Jonny Greenwood.

Michael Eavis, who runs Glastonbury, brought them on to the festival's Park Stage, billed as TBC, on Friday 25 June 2010, and Yorke introduced himself as “Thomas Yorke”. He started alone with “The Eraser”; Greenwood joined him later, and the nine songs ended on “Street Spirit”.