List of The Queens: 4 Legends, 1 Stage Gladys Knight, Patti Labelle, Chaka Khan 's current and upcoming concert schedules, events, or shows. To find out what other events happening in the area, just click the city/state name or the venue name. Click the "buy tickets" button to see the cheapest The Queens: 4 Legends, 1 Stage Gladys Knight, Patti Labelle, Chaka Khan price tickets from our marketplace.