The Line, the Cross & the Curve 1993 one on netflix

A singer struggles to dance well in rehearsal with her band. A power outage leaves her alone in the studio, reviewing her life, when a mysterious woman appears through the mirror and gives her a pair of Red Shoes. The cursed shoes dance beautifully, but endlessly. The singer is drawn irresistibly into the fey world beyond the mirror, where she must redeem three magic symbols from the mysterious woman in order to obtain release from the cursed shoes.