As impressive as it may seem to hear one organist improvise, there are occasions where two or more organists gather together and improvise, either one after another, or perhaps even at the same time. Below are a few videos from YouTube where you can see how different artists manage to make this happen.

Olivier Latry, Vincent Dubois, Paolo Oreni and Michael Bottenhorn – Happy Birthday – St. Joseph, Bonn Beuel
Olivier Latry, Philippe Lefèbvre, Vincent Dubois, Paolo Oreni and Kalevi Kiviniemi – Improvisation-à-cinque – St. Joseph, Bonn Beuel
Olivier Latry & Philippe Lefebvre – Variations Pt. 1
Olivier Latry & Philippe Lefebvre – Variations Pt. 2
Frédéric Blanc, François-Henri Houbart and Olivier Latry improvise