Instrumental symphonic prog band from Hungary, originally active during the 1970s and known for blending Eastern European classical traditions with symphonic and jazz rock elements. Influenced by composers such as Béla Bartók and Johann Sebastian Bach, as well as progressive rock acts like Emerson, Lake & Palmer and Yes, the band developed a distinctive sound marked by ambitious compositions, synthesizer use, and complex arrangements. Although much of their early work went unreleased at the time, Panta Rhei has continued to gain recognition and remains active, contributing new material to the progressive rock landscape.