The DANUBIUS OCTET SINGERS is a Slovak men's vocal octet composed of professional singers - alumni of conservatories and music colleges from Bratislava. The primary focus is on the interpretation of "a cappella" songs composed by Slovak and foreign composers of classical music. The Individual singers in the octet are members of leading choral ensembles (the Vienna State Opera Choir, the Slovak Philharmonic Choir) from two capitals on the river Danube - hence the name Danubius Octet Singers. The ensemble was founded in 2013 at the initiative of conductor and choirmaster Daniel Simandl and Jaroslav Pehal, a member of the Vienna State Opera Choir. Their aim was to fill a gap in the professional interpretation by a male voice choir without an instrumental accompaniment in Central Europe. The main objective of the octet's dramaturgy is to discover, perform, and record often forgotten treasures of the cultural heritage of Slovak and Czech national music. The ensemble has represented Slovak vocal art at several music festivals: International Festival of Male Choruses in Pécs, Hungary (2016), Festival of Chamber Music "Konvergencie" in Bratislava, Slovakia (2017), International Music Festival "Middle Europe 2014"in Germany and Czech Republic - and at the international festivals "Janáček's Hukvaldy 2014" and "Smetana's Litomyšl 2018" in the Czech Republic.

In 2022, the Danubius Octet Singers performed its premiere of works by Jewish composers Gideon Klein, Viktor Ulmann and Ilse Weber, internees in the Teresienstadt Ghetto who perished in Nazi concentration camps.