Gilberto Guarino plays Bach: "Das Orgelbüchlein" - "Ich ruf zu dir, Her Jesu Christ" BWV 639.<br />Temperament: Werckmeister III<br />Though not properly a "trio", BWV 639 is the only melody chorale written in three voices in the "Orgelbüchlein".<br /> According to Peter Williams (“The Organ Music of J. S. Bach”, Cambridge, Second Edition, p. 308), the slurs (l.h.) may well point to a “sostenuto”. According to John Butt (1990, “Bach Interpretation – Articulation Marks in Primary Sources of J. S. Bach”), “These slurs for organ probably indicate a varied or ‘articulated’ legato in the ‘French’ manner.” The same author writes: “Clearly, most slurs in Bach’s music indicate that the notes are to be grouped in some way. However, the exact function of the slur can only be conjectured from its context.”<br /> Such a chorale prelude is a real “De Profundis Clamo ad Te” for organ. It combines resignation, faith and endurance in a melting pot of sublime harmonies and truly bachian beauty.