Arts Preview: Dance performances will push boundaries

Orange County audiences are spoiled for choice when it comes to selecting performances that challenge and expand the ideas of traditional concert dance.  Of course there will be the classics – the Mariinsky Ballet at Segerstrom Center for the Arts (Oct. 12-15) and productions of “The Nutcracker” at Segerstrom (Dec. 7-17)  and, for the first time in five years, The Music Center (Dec. 7-10) – but  the 2017-2018 offerings also promise projections, props, light