The Mabel Mercer Foundation has announced plans for its 32nd annual New York Cabaret Convention, to be offered this year from October 25 through 27. An all-star nitery cast performs The Melody Lingers On: A Gala Tribute to the Songs of Irving Berlin at 6 p.m. on Wednesday, October 27 at the Foundation’s long-time Manhattan home, the Rose Theater, Jazz at Lincoln Center (Broadway at 60th Street). The Berlin evening will be preceded by two shows to be streamed – free of charge — via at 7 p.m. on Monday, October 25 (Love Is Sweeping the Country) and Tuesday, October 26 (The Future of Cabaret). KT Sullivan, artistic director of the Foundation, hosts on Monday and Wednesday evenings; Natalie Douglas emcees Tuesday’s show. Check the website for more information. Tickets for Rose Theater: