The annual holiday tradition of the Vivaldi Candlelight Concert returns Monday and Tuesday, Dec. 3 and 4, at St. Mark's Cathedral.

For the eighth year, the concert will benefit International Visitors' Utah Council, founded in 1966 to promote world friendship and understanding. The group welcomes visiting dignitaries and is supported primarily through local contributions.Performing on this year's edition will be soprano JoAnn Ottley, alto Mary Westcott, tenor Michael Ballam, baritone David Power, the University of Utah A Cappella Choir and members of the Utah Symphony.

Under A Cappella Choir director Ed Thompson, they will perform the seldom-heard Vivaldi Sacrum, acquired via photocopy from the conductor Vittorio Negri. In addition, the orchestra under music director Ricklen Nobis will perform concertos for multiple instruments, including violin, two horns, trumpets and bassoon.

Soloing will be violinist Yuri Merzhevsky, formerly concertmaster of the Leningrad Chamber Orchestra; bassoonist Mitchell Morrison; trumpeters Nick Norton and Patrick Kunkee; and William Barnewitz and Sue Hudson, horns.

Tickets, at $25, may be obtained from the Utah Symphony box office, 533-NOTE, or by calling 532-4747.