Seppi’s Restaurant (near Carnegie Hall) 123 W. 56th Street (between 6th & 7th Aves.) 212.708.7444; open daily until 2 a.m. www.seppisny.com $36 three-course pre-theatre menu 5-7 pm $25 Sunday brunch from 10:30 am, incl. all-you-can-eat chocolate dessert buffet. Frequented by Carnegie Hall performers. Bar can get noisy. Clarinetist Rick Bogart and his trio (piano, bass) perform swing style sets from 8:30 pm; Sundays noon to 3 pm.