The choreographer is usually used for the author in dance performances.
Murphy's (2008) production of ....
Murphy, G. 2008, Swan Lake, [dance performance], Australian Ballet Company, Melbourne Concert Hall, viewed 28 May 2008.
For live theatre, the director is used as the author.
Geoffrey Rush's performance (Armfield 2009) is...
Armfield, N. 2009, Exit the King, [theatrical performance], Sydney Theatre Company, Sydney Theatre, viewed 24 July 2009.