▁which ▁a ▁ch ore ograph er ▁dict ates ▁motion ▁and ▁form ▁in ▁detail , ▁leaving ▁little ▁or ▁no ▁opportunity ▁for ▁the ▁dan cer ▁to ▁exercise ▁personal ▁interpretation . ▁ ▁Several ▁underlying ▁techniques ▁are ▁commonly ▁used ▁in ▁ch ore ography ▁for ▁two ▁or ▁more ▁d anc ers : ▁ ▁Mir ror ing ▁- ▁facing ▁each ▁other ▁and ▁doing ▁the ▁same ▁ ▁Ret ro grade ▁- ▁performing ▁a ▁sequence ▁of ▁moves ▁in ▁reverse ▁order ▁ ▁Can on ▁- ▁people ▁performing ▁the ▁same ▁move ▁one ▁after ▁the ▁other ▁ ▁Level s ▁- ▁people ▁higher ▁and ▁lower ▁in ▁a ▁dance ▁ ▁Sh adow ing ▁- ▁standing ▁one ▁behind ▁the ▁other ▁and ▁performing ▁the ▁same ▁moves ▁ ▁Un ison ▁- ▁two ▁or ▁more ▁people ▁doing ▁a ▁range ▁of ▁moves ▁at ▁the ▁same ▁time ▁ ▁Mov ements ▁may ▁be ▁character ized ▁by ▁dynamics , ▁such ▁as ▁fast , ▁slow , ▁hard , ▁soft , ▁long , ▁and ▁short . ▁ ▁See ▁also ▁ ▁Bal let ▁master ▁ ▁Contact ▁impro vis ation ▁ ▁Dance ▁impro vis ation ▁ ▁Stage ▁Direct ors ▁and ▁Ch ore ograph ers ▁Society ▁List s ▁and ▁categories ▁ ▁List ▁of ▁ch ore ograph ers ▁ ▁: Category : Bal let ▁ch ore ograph ers ▁ ▁Further ▁reading ▁▁ ▁Bl om , ▁L , ▁A . ▁and ▁Tar in ▁Chap lin , ▁L . ▁( 1 9 8 9 ) ▁The ▁Int imate ▁Act ▁of ▁Ch ore ography . ▁Dance ▁Books . ▁▁ ▁Ell feld t , ▁L . ▁( 1 9 9 8 ) ▁A ▁Pr