The Grevillea Quartet. Photo: Peter Hislop. Music / Grevillea Quartet presents Barber and Dvorak, Larry Sitsky recital room, ANU School of Music. Thursday, April 22. Reviewed by GRAHAM MCDONALD. AS far as I can tell, the Grevillea Quartet is the only dedicated string quartet regularly performing in Canberra at the moment. At least a couple of other chamber ensembles have quartets of players at their core, but more often expand their forces to suit the repertoire. From necessity the quartet is not a full-time activity for them, and like every other musical group around, their activities have been restricted for the past year or more.