unheard

In the world of federal prosecution, refusing to indict is almost unheard of.

Surprise deliveries are uncommon but far from unheard of, experts say.

"Live streaming was unheard of 10 years ago," she said.

Of all his more than 3,000 wins, he will most be remembered for his ride aboard Secretariat winning the Triple Crown and Belmont Stakes by an unheard of 31 lengths.

Further previously unheard and rare tracks from them will feature on a new album called Hidden Treasures, which will be released on 7 November.