<P> American folk singer Judy Collins heard a tape of the original demo recording in 1968, and decided to cover the song . She released her recording first as the B - side of her cover of "Both Sides, Now", and then as the title track of her album Who Knows Where the Time Goes, both released in 1968 . Hers was the first widely available recording of the song . </P> <P> In 1968 Denny joined the folk - rock band Fairport Convention . She recorded the song on her second album with the band, the 1969 album Unhalfbricking . This version had more of a rock influence . </P> <P> "Who Knows Where the Time Goes?" became a signature song for both Denny and Fairport Convention, and has been covered by many artists . </P> <P> In 2007, the Unhalfbricking version was voted "Favourite Folk Track Of All Time" by listeners of BBC Radio 2 . </P>

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