Wilhelm Hansen; Carl Nielsen udgaven
In D minor; originally Quartet No. 1
About 9 movements, relationships uncertain, in various keys, including Andante tranquillo, Scherzo, Finale, Minuet, and Trauermarsch; some were composed before 1887.
In F major; probably included at least two of the movements in the preceding entry. Its premiere on 1888-01-25 took place at a concert of the Private Chamber Music Society, was probably not public, and is therefore not listed on this site amongst Nielsen’s premieres.
In G minor; revised as late as 1897
In F minor
In E-flat major; revised in 1900
Original version of Quartet No. 4; revised several times
Peters; Carl Nielsen udgaven
In F major; final revision of Piacevolezza
Copenhagen  Quartet