Opera Slippers

slippers
(slipper) skidder: a person who slips or slides because of loss of traction
A comfortable slip-on shoe that is worn indoors
A light slip-on shoe, esp. one used for dancing
(slipper) low footwear that can be slipped on and off easily; usually worn indoors
A slipper or houseshoe is a semi-closed type of indoor footwear, consisting of a sole held to the wearer's foot by a strap running over (or between) the toes or instep. Slippers are soft and lightweight compared to other types of footwear.

opera
Such works as a genre of classical music
a commercial browser
a building where musical dramas are performed
A dramatic work in one or more acts, set to music for singers and instrumentalists
A building for the performance of opera
a drama set to music; consists of singing with orchestral accompaniment and an orchestral overture and interludes