The CRIMSON erred yesterday when it announced the date of the combined Harvard and Radcliffe Music Clubs' chorus as yesterday evening instead of this evening. The group will give a program of contemporary choral pieces tonight at 8:30 o'clock in the Paine Music Hall.

Formed last fall under the direction of Irving Fine, associate professor of Music, the chorus will feature the premiere performance of a new Mass by Igor Stravinsky and a series of contemporary compositions including selections by Aaaron Copeland, Lukas Foss, and Robert Middleton '43.

On the program with the singers will be two-piano pieces by Darius Milhaud and Theodore Chanler and the four-hand sonata by Hindesmith, while the group will conclude the concert with the first American presentation of the cantata "Secheresses" by Francis Poulenc.