|Genre Categories||; ; ;|
|Work Title||Messa a 4|
|Composer||Pergolesi, Giovanni Battista|
|I-Catalogue NumberI-Cat. No.||IGP 20|
|Composer Time PeriodComp. Period||Baroque|
|Instrumentation||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.