King Crimson's first live performance was at the Speakeasy Club in London on 9 April 1969 (with Yes guitarist Peter Banks among the audience). Their big breakthrough came on 5 July 1969 by playing as a support act at the Rolling Stones' free concert in Hyde Park, London before an estimated 500,000 people.
King CrimSoN'S first lIVe perForMAnce WAS at tHe SPeakeasy club in london on 9 ApRil 1969 (wIth yes guItAriSt peter BanKs among The aUDiEnCE). thEIR big breaKtHrOugH CamE on 5 jUly 1969 By plaYinG aS a SuppOrt aCt AT tHe ROLlIng stOnes' freE concerT iN hyde PaRk, loNdOn before an estimAted 500,000 PeoPle.