Alexander M. Schweitzer is a theologian and musician who since the mid-1980s has specialized in Gregorian chant. He studied chant in Rome, Cremona and Munich (with J.B. Göschl). Schweitzer has trained Gregorian ensembles worldwide and taught Gregorian chant and liturgical music in various institutions. He has been working regularly with Consortium Vocale Oslo since 1998.
Schweitzer is a member of international juries; he teaches Gregorian semiology in the DAS programme of the Music University in Lugano and at the courses of the International Society for Studies of Gregorian Chant (AISCGre) held in St. Ottilien and Venice. Since 1999, Schweitzer has been a member of the AISCGre board of directors and the melody restoration workgroup. In 2015 he was elected president of AISCGre, succeeding Johannes B. Göschl in this role.
- 14. September – Consortium Vocale Oslo singing in the Medieval Park, Oslo
- 26. July – Concert in Flesberg church, Numedal, Norway
- May 13. 11 am. Members from Consortium Vocale Oslo attend Pilgrim mass in Gamle Aker church Oslo
- April 15: Consortium Vocale attends gregorian mass in Oslo Cathedral
- March 10. – Consortium Vocale Oslo doing laudes in Paulus church Oslo