sentences:  In 2011, Abraxas went through another personnel change.Ivan Doležálek, who also played with Janda in SJB and Yandim Band, joined on bass, and Růžička was replaced by Eduard Štěpánek on drums.That year, the band celebrated 35 years of existence and on 19 October 2011, the celebrations culminated in a concert at Prague's Retro Music Hall in the presence of all the band's previous drummers as well as other guests, including Imran Musa Zangi, Matěj Ruppert, Viktor Dyk, and Varhan Orchestrovič Bauer.