Credit: SWNS / David Williams<br /><br />This 81-year-old retired medical assistant wowed nursing home residents with an impromptu vocal performance at a fundraiser.<br /><br />Dave Williams stunned everyone with his note perfect rendition of 'Unchained Melody', by The Righteous Brothers.<br /><br />But the virtuoso performance would have come as no shock to those who knew Dave as he had previously sang with The Beatles - THREE TIMES.
