The greatest Polish rock artist/composer Z Holdys described Mark
'Bestia' Olbrich as: "One of the grooviest blues bassist's around!",
and he most certainly is.

Mark 'Bestia' Olbrich is a Blues Bassist, Band Leader and Producer. He
performs regularly at the world's most prestigious blues venues, with
some of the best blues artists there are. For more info and free
downloads please visit: www.thebluesbass.com