The Mountaingrass festival is an institution, having been around for more than a quarter of a century. It is held in Harrietville. The dates for 2015 are November 20 to 22.

From the organisers:

Mountaingrass is organised by the Australasian Bluegrass and Old Time Music Association Inc. (ABOTMA Inc.)

For over 26 years the small township of Harrietville has played host every year to bluegrass and old-time music festivals. Banjo player and luthier Laurie Grundy conceived the idea of a bluegrass and old time music convention at Harrietville and in conjunction with Nick and Janet Dear from Pickin’ at the Piggery in Melbourne they organised the first ‘Harrietville Bluegrass & Traditional Country Music Convention’ in October 1989. It quickly became the peak event on the bluegrass and old time music calendar in Australia and was affectionately known simply as ‘Harrietville.’

Mountaingrass continues the tradition of bringing U.S. Bluegrass and Old-Time acts to play concerts and run workshops for fans and players of all levels. Mountaingrass also showcases a selection of acts from Australia and New Zealand and runs instrument and other workshops for players of all levels. Most of all Mountaingrass offers two and a half days of non-stop picking and jamming and lots of opportunities to improve your chops!

You can find details on the musicians, and buy tickets here.