This was once sung by Chazan Frankel- a Hamburg native- in KAJ of Washington Heights as an occasional alternative to the Frankfurt Kadish Tiskabal after Rosh Hashanah Musaf. It is recorded here by Rabbi A Rogin as a favor for a friend. Chazan Frankel said that this Kadish was sung in Hamburg on Rosh Hashanah. (See elsewhere on this site, Shir Hamalos sung by Mr. Rudi Meyer z'l to a forgotten Kadish tune once used in KAJ.