Gregorian chant choir of the Vilnius Arch-Cathedral Basilica – www.gregoriana.lt
Palendriai St. Benedict Monastery – www.palendriai.lt
International Gregorian chant festival in Watou (Belgium) – www.schuyesmans.be
Facsimiles of Gregorian chant manuscripts– gregofacsimil.over-blog.com
Digital depository of the manuscripts of European Early Music – www.musicalia.lt
Church Music Association of America – www.musicasacra.com
St. Peter's Abbey, Solesmes – www.solesmes.com
The order of St. Benedict– www.osb.org
