Soul stars Patti Labelle, Gladys Knight and Natalie Cole are all set to grace the Broadway stage as guest performers this summer (14) in Tony Award-nominated show After Midnight. The musical, which celebrates jazz icon Duke Ellington's years at Harlem, New York's famous Cotton Club, has already featured the likes of k.d. lang, Toni Braxton and Vanessa Williams as guest vocalists, and now another trio of music veterans will be delighting audiences at the Brooks Atkinson Theatre. LaBelle, who first saw the show in January (14), will take over from singer Fantasia Barrino from 10 to 29 June (14), while Knight will pick up the mic from 8 July to 3 August, and Cole will appear from 5 to 31 August (14). After Midnight has proved to be a big hit with fans and critics alike - it scored seven Tony nominations, including a nod for Best Musical, when the shortlist was announced on Tuesday (29Apr14).