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Study musical selections of Hildegard von Bingen with Medieval and Renaissance music specialist Marsja Mudde in live, online interactive sessions via Zoom. Click button for spring 2026 dates.
Sing the Mass!
Promoting the ancient song of the Church in the modern-day Mass
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Kyriale Lacense: Unpublished, simpler Gregorian Mass settings suitable for today’s congregations, and tips for introducing them. ~ Saturday, February 28
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Organ Accompaniment of Gregorian Chant [Part I] ~ Monday, March 23
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Organ Accompaniment of Gregorian Chant [Part II] ~ Monday, April 20​
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Kyriale Lacense
Simple, unpublished Gregorian Mass settings suitable for today’s congregations, and tips for introducing them.
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Approximately 90 minutes, including Q & A, with Dr. Horst Buchholz. Read bio...
Saturday, February 28, 2026
east of international date line
6 pm Athens & Helsinki
5 pm Amsterdam, Lagos, Madrid, Paris & Stockholm
4 pm Dublin, London & Rome
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When will this lecture happen in my time zone? Click here for time zone tool.
west of international date line
1 pm Santiago
12 noon Halifax
11 am Bogota, Lima & New York
10 am Chicago & Mexico City
9 am Calgary & Denver
8 am Los Angeles
7 am Anchorage
Do you seek to introduce new chanted Mass settings to your congregation, but are concerned Missa de Angelis and Missa Orbis Factor are a bit too ambitious for them at the moment? Or have you ever wished there were more options than the 18 chant Masses in the Kyriale?
There is help: the Kyriale Lacense. Compiled by the Benedictine monks at the Abbey of Maria Laach in Germany over several generations, the "KL" offers beautiful settings of the Mass Ordinary that are much easier to sing than the majority of the better known settings in the Graduale Romanum.
This compilation was designed for monks who still chant the Mass and the Office in Latin (modern Roman Rite) on a daily basis, and sought greater variety for their ferial (daily) Masses. In the best Benedictine tradition, the monks have collected and composed more Gregorian settings which could be useful in a variety of situations. While this compilation is not published anywhere, every course participant will receive a PDF copy of Masses XIX through XXXIV.
Participants will also learn about tried-and-true methods for teaching a new Mass setting to a congregation, pulling from Dr. Buchholz’ vast experience as a parish and cathedral director of music.
$100 USD
Organ Accompaniment of Gregorian Chant
Part I: To Play or Not to Play, That Is the Question
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Examining organ accompaniment of chant, styles and principles, plus tips to craft your own.
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Approximately 90 minutes, including Q & A, with Dr. Horst Buchholz. Read bio...
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The subject of chant accompaniment is a topic of lively discussion in the chant community. When might one wish to accompany chant? What does accompaniment do to the chant? These and other questions will be investigated, especially with regard to the relationship of organ support to congregational singing.
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The bottom line: there are many ways to accompany chant depending on the situation, and there are a number of critical factors that will determine your success. We will explore these factors: whether or not to play the melody, how to determine chords and inversions, alternatim singing of schola and congregation, use of organ stops, manuals and pedals (or manuals only), observations about male and female voices, and improvisation.
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Lecture will provide items of interest to beginning and experienced organists alike, and study materials to “take home". Several demonstrations will be included.
$100 USD
east of international date line
Tuesday, March 24
1 pm Auckland
11 am Sydney
10 am Brisbane
9 am Seoul & Tokyo
8 am Hong Kong, Manila & Perth
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west of international date line
Monday, March 23
9 pm Halifax & Santiago
8 pm New York
7 pm Bogota, Chicago & Lima
6 pm Calgary, Denver & Mexico City
5 pm Los Angeles
4 pm Anchorage
2 pm Honolulu
Organ Accompaniment of Gregorian Chant
Part II: Techniques for crafting your own organ scores​
Approximately 90 minutes, including Q & A, with Dr. Horst Buchholz. Read bio...​
east of international date line
Tuesday, April 21
12 noon Auckland
10 am Brisbane & Sydney
9 am Seoul & Tokyo
8 am Hong Kong, Manila & Perth
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When will this lecture happen in my time zone? Click here​ for time zone tool.
west of international date line
Monday, April 20
9 pm Halifax
8 pm New York & Santiago
7 pm Bogota, Chicago & Lima
6 pm Calgary, Denver & Mexico City
5 pm Los Angeles
4 pm Anchorage
2 pm Honolulu
Part II builds upon the basic techniques of chant accompaniment learned in Part I, expanding with harmonic coloring and transposition of chants. Freer forms of organ accompaniment (e.g. without melody) and melodies in the left hand (tenor cantus) will also be examined.​
prerequisite: completion of Part I
$100 USD
ICA Lecture Series
Technical Requirements
A desktop computer, laptop, or tablet (the larger the screen the better) equipped with videocamera (no cell phones, please), and Zoom app installed. Reliable access to high-speed internet is a must. Student is responsible for working technology.
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Tuition
$100 USD per session.
​​Receive a $25 USD reduction in tuition when signing up for 2 lectures at once.
Tuition payment reserves your seat/s.
Ask your parish whether funding is available for continuing education.
Tuition may also be tax deductible for professional (compensated) musicians.​​
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back to Kyriale Lacense Organ Accompaniment I Organ Accompaniment II