|Pergolesi's authorship is now considered doubtful|
||Messa a 4
||Pergolesi, Giovanni Battista
|I-Catalogue NumberI-Cat. No.
|Composer Time PeriodComp. Period
||unknown (see below, Comments)
Since the WorldCat link for this goes to a 5-voice mass, the designation "Messa a 4" may not be original, and given that the authorship is doubtful, this has been tagged for undetermined instrumentation.