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1968
Self-taught in playing the harmonica
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1983
Founded the group Samaria Blues Band in Šamorín
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1985
Co-founder of the group Bluesweiser with Juraj Turtev and Miroslav Staník
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1988
Member of Jozef Barina’s group Rockforte
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1990 – 1991
Active in the group Exit (Miro Dvorský, Erich “Boboš” Procházka, Jiří Vana, Oto Berežný)
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1991
Founded Electric Blues Band with Jiří Vana and Oto Berežný
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1991 – 1999
Member of the group Bluesweiser
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1997
Electric Blues Band performed as the opening act for John Mayall & the Bluesbreakers in Bratislava
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1999
Solo project Boboš & The Frozen Dozen (Erich “Boboš” Procházka – vocals, harmonica; Milan Konfráter – vocals, electric guitar; Dušan Strapec – bass guitar; Oto Berežný – drums)
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1999 –
Permanent member of Ján Litecký Šveda’s group Víťazný traktor (Victorious Tractor), with whom he performed at Blues Brothers Day in Wrocław; at Dobrofest in Trnava, played in a duo with J. Litecký Šveda and with Rich “Slidin’” Jones
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2000
Performances at festivals in Rawa Mazowiecka, Kraśnik (Poland), Paks (Hungary) – with Frozen Dozen and in Olsztyn (Poland) – with Víťazný traktor
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2001 – 2002
Host of the show Rhythm & Blues on Radio B1; occasional blues ensemble Dusty Fort Band with Lori Malinák and Štefan Lengyel
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2002
Participated in the V4 Harmonica Project in Bratislava with Sławek Wierzcholski (Poland), Mátyás Pribojszki (Hungary), and Ondřej Konrád (Czech Republic)