The Summer Chorus's annual concert in Sanders Theatre tonight at 8:30 p.m. will conclude the Summer School's concert series.

Some 200 singers and instrumentalists will take part in the performance, the annual highlight of the summer music program. John Ferris, Harvard University Organist and Choirmaster and Lecturer on Liturgical Music at the Divinity School, will conduct.

Ferris, who trains Harvard's Memorial Church choir during the academic year, is enthusiastic about his summer group. "I'm amazed at the progress they've made in six weeks," he said.

Paul Althouse, a graduate student in Music History at Yale, is assistant conductor and chorus master; the chorus will be accompanied by Marion Ruhl, assistant University organist.

The featured work on the program will be the Budavari Te Deum of Zoltan Kodaly, which the chorus performed earlier this summer at the Dartmouth College Congregation of the Arts. The chorus will be assisted in the Te Deum by members of the Cantabrigia Orchestra, conducted by Joel Lazar. Florence McBride, soprano, Henry Gibbons, tenor; Colleen Ryan Schwartzgebel, alto; and Peter Solomon, bass, will solo.

Other works on the program include Omnes Gentes by Jacob Handl; Psalm 84, by Heinrich Schutz; and two motets, Ich Lasse Dich Nicht, by J.C. Bach, and Warum ist Das Licht Gegeben, by Brahms. The small chamber chorus will offer four settings of the Ave Maria by Joaquin des Pres, Schutz, Verdi, and Stravinsky, in addition to the Trois Chansons by Debuzsy.