Three members from the family of the famous Orthodox musician, Tamás Bubnó sing in the Saint Ephraim Male Choir having eight members. The choir is the guest of the Calvinist site, the Kálvin Square Reformed Church, where one of the numerous chorales of J. S. Bach will be performed beside the treasures of Calvinist and Orthodox Church music. Organ performance by Tamás Bódiss, organ player of the Kálvin Square Church with his own composition interpreted by him under the title J. P. Sweelinck: Psalm 116.