Ave dulcissima Maria, Vera spes et vita dulce refrigerium. O Maria, flos virginum, Ora pro nobis, Jesum. Carlo Gesualdo da Venosa, Ave_dulcissima_Maria_Bosca on an enhanced enharmonic version from an Josep Boscà organ from ca. 1700 with switches: C# (grey key) activates the usual diatonic tuning, with E-flat and G-sharp Eb (blue key) sets all enharmonics to flats Bb4 (red key) sets them to sharps