Some of the chants are original works by Petar Dinev and Dobri Hristov (Bulgaria), and by the Russian composers Alexander Grechaninov, Pavel Chesnokov, Ipolitov-Ivanov, etc. ###>Some of the chants are original works by Petar Dinev and Dobri Hristov (Bulgaria), and by the Russian composers Alexander Grechaninov, Pavel Chesnokov, Ipolitov-Ivanov, etc.