Raegan Bryce-Davis, acclaimed as “one of the best mezzo sopranos of this generation” by The New York Observer and Jeanne Minette Cillers, South African pianist known as a pianistic poet, will perform at San Francisco’s Herbst Theatre on Jan. 27 at 7:30 p.m. | By Barbara Fluhrer Raegan Bryce-Davis, acclaimed as “one of the best mezzo sopranos of this generation” by The New York Observer and Jeanne Minette Cillers, South African pianist known as a pianistic poet, will perform at San Francisco’s Herbst Theatre on Jan. 27 at 7:30 p.m. They will perform some of their favorite repertoire, including