|Composer Time PeriodComp. Period
Ett wrote at least one other Laudate Dominum which has a different incipit and which RISM classifies as an offertory. However, the RISM entries that match this incipit are mostly in F Major, with one in A♭ Major, and two entries list the F Major version as an excerpt from Missa Laetare Jerusalem WagE 2.148 or Mass WagE 1.1.13b, though the incipits vary after the first few bars. The other entries classify it as a gradual and a psalm, it is tagged as such for now, but there is still a possibility that it is from a Mass and should be moved.