Australian audiences know Wayne McGregor from Dyad 1929, made in 2009 as part of The Australian Ballet’s Ballets Russes celebration; Chroma, choreographed in 2006 and brought into the repertoire in 2014; and Infra, staged by TAB in 2017 but dating from 2008. Obsidian Tear, the opening work in the Instruments of Dance triple bill, is not that Wayne McGregor. Absent…