The Rie Bloomfield Organ Series presents Daniel Zaretsky at 7 p.m. today (Tuesday, Sept. 14), in Wiedemann Recital Hall. Zaretsky has performed since 1988 in all the former Soviet Union's important venues, as well as countries all around Europe and Australia. In 1991, he won the National Organ Competition and took third prize in the Speyer International Organ Competition in Germany. For tickets, call the Fine Arts Box Office at 978-3233.