A choral group from Christ's College, Cambridge University, will perform at the City Hall Concert Hall tomorrow at 8 pm. The musical tradition of Christ's College can be traced back to the beginning of the 16th century, while the modern history of the choir began in 1865. Since then, the choir has changed from the original male voice ensemble to a mixed-voice group. The choir consists of 22 members who are all students of Cambridge University. They perform regularly in and around Cambridge, and also on national and international tours. Led by its director, David Rowland, the choir will perform both sacred and secular music in the forthcoming concert, including works by Purcell, Bruckner, Faure, Byrd, Britten, Bach, Mozart and Walton. Mr Rowland, who has been the Director of Music at Christ's College since 1984, read music at Corpus Christi College, Cambridge, where he was organ scholar. In 1981, he won the prestigious St Alban's International Organ Competition. He performs widely as harpsichordist and pianist in Britain and abroad. Tickets at $130, $90 and $60 are available at all Urbtix outlets (half-price discounts for senior citizens, the disabled and students). In addition, there are discounts for bookings in groups. For reservations, call 2734 9009, and 2734 2007 for programme enquiries.