Chant

Having served as the music of the Roman Catholic Church for hundreds of years, chant has been the subject of improvisations throughout many different stylistic periods and in many different forms.
Some popular chant themes include:

Videos:
Gerre Hancock – Improvised versets on the Magnificat Solemn Tone – April 4, 2004 – St. Thomas
Otto Maria Krämer – Improvisation in Memoriam Marcel Dupré on “Ave maris stella”
Loïc Mallié Improvisation sur deux thèmes grégoriens
Olivier Messiaen – Puer Natus Est – La Trinité
Pierre Pincemaille – Conditor Alme Siderum – St. Denis
William Porter – Improvisation: Four Modal Variations on Salve Regina: I (Theme and Plein jeu)
William Porter – Improvisation: Four Modal Variations on Salve Regina: II (Scherzo)
William Porter – Improvisation: Four Modal Variations on Salve Regina: III (Meditation)
William Porter – Improvisation: Four Modal Variations on Salve Regina: IV (Introduction and Passacaglia)

Hymns and Chorales

Because hymns and chorales form the cornerstone of most Protestant worship services, they are frequent subjects for organ improvisations. Examples can be found below in both liturgical and concert settings.

Hymns and Chorales:

Videos:
Vincent Dubois – Improvisation on Ode to Joy by BEETHOVEN – Reims Basilique St Remy
Gerre Hancock – Final hymn and improvised Organ Voluntary on ‘Gott sei Dank’ – May 18, 2003 – St. Thomas
Pierre Pincemaille: Improvisation sur “Noi canteremo gloria a Te” (aka OLD HUNDREDTH) – Chignolo d’Isola, Bergamo, Italy
William Porter – O dass ich tausend Zunge hätte – Prelude
William Porter – O dass ich tausend Zunge hätte – Canon
William Porter – O dass ich tausend Zunge hätte – Intermezzo
William Porter – O dass ich tausend Zunge hätte – Fugue
Tom Trenney – “Duke Street”, April 28, 2013 at First-Plymouth Church
Tom Trenney – “Come Down, O Love Divine” – First-Plymouth Church

For more videos, see the master list of all videos on the website here.

Postlude-Sortie

Example videos:
Pierre Cochereau – Sortie – Notre Dame – Audio only
Johann Vexo – Vêpres 07.04.2013 – Sortie
Daniel Roth – Sortie – 7 February 1999 – St. Sulpice
Pincemaille – Sortie – St. Denis
Olivier Penin – Sortie – St. Clotilde
Philippe Lefebvre – Sortie – 19.04.2009 – Notre Dame
Philippe Lefebvre – Sortie – 01.05.2011 – Notre Dame
Latry – Sortie – 18.09.2011 – Notre Dame
Latry – Sortie – 10-09-2011 – Notre Dame
David Briggs – Sortie at St. Sulpice