Twelve voices singing unaccompanied, without a conductor, Stile Antico achieve miracles of precision in ensemble and tuning. Their Treasures of the Renaissance programme, broadcast live by BBC Radio 3, neatly demonstrated the tonal and expressive variety of which they are capable. Liturgical settings such as Gombert’s Magnificat were projected with a more direct, even brusque, delivery, in which the edge the sopranos bring was emphasised.