The Derby Deli & Dueling Piano Bar is located inside of the Kaleidoscope Mall off of Crown Valley Parkway. It makes its own corned beef, pastrami and breads. All of the food tastes homemade. The deli carries pastrami, corned beef, roast beef, knoblewurst and roasted turkey. Happy Hour is Monday through Friday from 3 p.m. to 6 p.m. There are $2 domestic drafts, $3 import drafts, half-priced appetizers, $5 well and house wines. The parking is located on the bottom level of the mall.