Also in 1976 Enikő Ács joined the band as a vocalist and Csaba Béke returned on drums, contributing to the other tracks of the Bartók album recorded between 1975–1977.
Panta Rhei sold records in Eastern Europe and the Soviet Union and were known for their classical adaptations of Béla Bartók's and Edvard Grieg's works.
Panta Rhei were influenced by progressive rock bands Emerson, Lake & Palmer, The Nice, King Crimson, and others.
Their albums sold over 100,000 copies in Hungary and Eastern Europe, whilst the band was mainly amateur they managed to record and release a few material in their entire lifespan.
A compilation CD called Epilógus (English: "Epilogue") of previously unpublished material was released in 1998, featuring three fusion pieces from 1977 and a 22-minute prog rock epic, Peer Gynt Suite recorded in 1976 and, ennobled to a must-hear for progressive rock fans, Epilógus features electronic music from 1983 until the latter 80s under the "P.R.
Panta Rhei's organ virtuoso and synthesizer wizard Kálmán Matolcsy died on 5 September 2005, (born in 1953) leaving two sons and a wife behind, (his death has been confirmed as a programme was dedicated to him and the band on Hungarian Radio in October 2005).
[citation needed] Andras Szalay designed three generations of guitar synthesizers: Shadow GTM-6 and SH-075 in 1986–87; Axon series in 1993–97; and recently the wireless Fishman Triple Play in 2005–12.