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. Individual octet's singers are members of leading choral ensembles (Vienna State Opera Choir,  Slovak Philharmonic Choir) in two capitals on the river Danube - hence the name Danubius Octet Singers. The ensemble was founded in 2013 on the initiative of conductor and choirmaster Daniel Simandl and Jaroslav Pehal -  member of the Vienna State Opera Choir. The aim was to fill an empty gap in professional interpretation of 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 national music. The octet performs mostly pieces of composers as Eugen Suchoň, Ján Levoslav Bella, Mikuláš Schneider-Trnavský and other Slovak, Czech and Slavic authors who devoted a large part of their work to male voices. The ensemble represented Slovak vocal art in Budapest (2015), Vienna (2016, 2017) and at several international music festivals: Festival of Male Choruses in Pécs, Hungary (2016), Festival of Chamber Music "Konvergencie", in Bratislava Slovakia (2017), international music festival in Germany and Czech Republic - "Mitte Europa Festival 2014" and at the international festivals as "Janáček's Hukvaldy 2014" and "Smetana's Litomyšl 2018".