Denys Sichynsky was born on 2 October 1865 in Kliuvyntsi, now the Khorostkiv urban hromada of the Chortkiv Raion of Ternopil Oblast in Ukraine.

In Lviv, Kolomyia, Stanyslaviv, and Przemyśl, he organized and conducted the choir association "Boian [uk]".

[1][2][3] In 1894, Sichynsky, along with Ivan Franko, Mykhailo Pavlyk, Osyp Rozdolskyi, Filaret Kolessa, and Ostap Nyzhankivskyi, actively participated in a committee established in Lviv to collect and publish Ukrainian folk songs.

Sichynsky has also composed works for symphony and chamber orchestras, piano solos, choral music, and liturgical score, including a cantata based on the text by Taras Shevchenko "Lichu v nevoli".

[1][3] In 1939, a monument was erected on Sichynsky's grave in Ivano-Frankivsk (sculptor M. Zorii); in 2000, a memorial architectural ensemble was opened in Kliuvyntsi (authors B. Bilous, M. Obeziuk, M. Samaryk); there is a museum room.