, ▁and ▁her ▁se am less ▁swe ep ▁from ▁las c iv iously ▁gr inding ▁on ▁an ▁aw est ruck ▁du de ▁from ▁the ▁audience ▁to ▁the ▁earnest ▁ball ad ry ▁of ▁' Don ’ t ▁Let ▁Me ▁Be ▁the ▁Last ▁to ▁Know ' ▁[...] ▁felt ▁true ▁to ▁the ▁swe ep ▁of ▁her ▁career   — ▁she ▁learned ▁that ▁she ▁can ▁control ▁the ▁narr ative ▁by ▁van ishing ▁into ▁a ▁club ' s ▁heat ▁or ▁into ▁literal ▁thin ▁air ." ▁Matt ▁K ivel ▁of ▁Vari ety ▁commented , ▁" Th ough ▁vis ually ▁impress ive , ▁the ▁show ▁lack ed ▁a ▁truly ▁eng aging ▁human ▁quality . ▁Spe ars ▁moved ▁with ▁an ▁almost ▁mechanical ▁det achment , ▁light ly ▁sh ifting ▁through ▁dance ▁rout ines ▁without ▁fully ▁letting ▁her ▁body ▁release ▁itself . ▁With ▁her ▁voice ▁heavily ▁processed ▁and ▁l aden ▁with ▁backing ▁tracks , ▁she ▁appeared ▁on stage ▁as ▁some ▁strange ▁bl end ▁of ▁Michael ▁Jackson , ▁Madonna ▁and ▁Kraft werk ' s ▁R alf ▁and ▁Flor ian ." ▁However , ▁Jam ! ▁C ano e ▁considered ▁the ▁show ▁was ▁" best ▁described ▁as ▁Jan et ▁Jackson - like ." ▁ ▁Steve ▁Pal op oli ▁of ▁Metro ▁Sil icon ▁Valley ▁said , ▁" Mus ically , ▁the ▁show ▁is ▁heavy ▁on ▁the ▁hits , ▁although ▁considering ▁Brit ney ▁as ▁a ▁musical ▁phenomen on ▁is ▁like ▁asking ▁which ▁of ▁Madonna ' s ▁albums ▁is ▁best . ▁She ' s ▁a ▁cultural ▁phenomen on , ▁obviously , ▁and ▁the ▁only ▁ed ict s ▁that