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A rare live performance of Marty Wilde, featuring his wife Joyce and his two children Kim and Ricky, has surfaced on Soundcloud. The recording features the song 'Walk right back' (made famous by the Everly Brothers) and has the four harmonizing on stage. It was recorded at the Lewisham Town Hall on February 5, 1974.
As far as we know, this is the earliest recording of Kim singing live.