The following links should assist you in better understanding the Catholic Church's teaching on such practices. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.
Actually, this should ad further clarification: Blessed John XXIII called Taize "that little spring time." Taize is a monastery in France that was founded by Protestants as an ecumenical out-reach. There are now Catholics who are monks there as well. The Catholics share in all the prayer services, except for the Eucharist. They gather separately for Mass and have the Blessed Sacrament reserved. All this is with the permission of Rome. At one point all the monks there began what they call, "Prayer around the cross," which consists of prayer that is acceptable to Catholics as well as other Christians. Many Catholic parishes and dioceses sponsor such prayer. / Fr. Vincent Serpa, O.P.