Wo soll ich fliehen hin, BWV 646

‘Whither shall I flee, troubled as I am by so many sins?’, asks a Trostgesänglein from 1630, to a melody regularly used by Bach in his cantatas and organ music. The hymn of faith is a rather businesslike encounter between the two keyboard parts set in the tenor in the pedal (the publication explicitly states ‘Ped: 4 Fuss.’, above the bass in the left hand). The flight or maybe the flow of Christ’s sacred blood is heard in the opening motif, a small group of seven quick notes, which recurs throughout the piece. But was this originally a cantata aria, like the five other Schübler Chorales, and was it then also arranged by a third party on the basis of a score? Or maybe there was no original and the composer wrote this work especially for the occasion. The two outer parts feel very keyboard-like in all respects; more so than in the other chorales. We will never know, until a ‘new’ cantata turns up somewhere in a dusty corner of the library.
(source: allofbach)

The hymn 'Wo soll ich fliehen hin' has the same tune as 'Auf meinen lieben Gott'