LOWMASS
Low Mass
Low Mass is a Tridentine Mass defined officially in the Code of Rubrics included in the 1962 edition of the Roman Missal as Mass in which the priest does not chant the parts that the rubrics assign to him. A sung Mass in turn is a Solemn or High Mass if celebrated with the assistance of sacred ministers ; without them it is a Missa Cantata.The above text is a snippet from Wikipedia: Low Mass
and as such is available under the Creative Commons Attribution/Share-Alike License.