The crumhorn in 'Folk Music' has an interesting provenance - the Amazing Blondel employed it to heart-warming & often 'comic' effect ("...it's not a snorkel or walking stick for little men..."), and even managed to send it soaring heavenwards in 'Celestial Light'. Malicorne arguably took things a little further; and perhaps it featured on those Shirley & Dolly albums with the late David Munrow (et al) although not having the albums to hand I couldn't say for sure.

Back in the 1970s it was a bit of a 'buzz' word (!) though you don't hear so much of it these days - or maybe I move in wrong circles?