This is one of Bach's most well-known chorale settings and it is traditional for the Advent and Christmas seasons. The solo harp part has separate pedal and lever harp versions with just a few pedal or changes. The optional second harp part can be played on either lever or pedal harp and has just two changes. All parts are at an intermediate level and are 2 pages long.
The video on this page is a recording of the solo harp part. The separate audio file is a computer generated recording of the duo version for your reference. Thank goodness real instruments don't sound like that!