In April 2016 I went to Athos to attend the Great Canon of Repentance. The rationale for the journey can be read here: https://www.researchcatalogue.net/view/565811/565812/0/27.
Link for the Canon Text: http://orthochristian.com/69650.html
The recording is from the monastery IM Osíou Grigoríou 14 April 2016. The morning service started 03:00 with about an hour of prayers, then the chatting of the Canon until about 06:30. The recording is conducted by the monastery.