Naked Voices A-cappella and instrumental Ensemble Tel-Aviv Museum of Arts October 28 This concert provided me with a much-awaited first acquaintance with the acclaimed "Naked Voices" ensemble, singing under Tamir Chasson. Unfortunately, my impression was that this ensemble still has some way to go if it is to match rival professional choirs. Although vital, sonorous, and apparently well-rehearsed, the ensemble is not quite there yet. It had problems of intonation and balance, and lacked clear-cut precision and vocal clarity required from professional a-cappella singers. The program performed was yet another downside: featuring secular pieces from the Italian Baroque, it soon became rather tedious and offered no stylistic variety. Several instrumental pieces were also performed by a small ad-hoc ensemble of professional players. Despite playing modern rather than period instruments, they were stylistically apt and provided some delightful moments. Especially notable were cellist Orit Messer and flutist Yossi Arnheim, whose musicality and good taste were evident in any single phrase.