Vulkán

Czech rock and soul group from Brno.
Formed in 1963, since 1966 led by Aleš Sigmund. Backing band for Hana A Petr Ulrychovi 1964–1967 and Martha A Tena Elefteriadu 1966–1970. Disbanded on 5 July 1970 and partially transformed to Skupina Aleše Sigmunda.
Members 1963–1966:
Oldřich Matoušek (guitar), Jiří Lešenar (guitar), Miroslav Lešenar (bass guitar), unknown (drums), Jaroslav Ptáček (drums), Hana Ulrychová (vocals), Petr Ulrych (vocals, guitar)
Members 1966–1967:
Aleš Sigmund (vocals, guitar, leader), Ivan “Sádra” Sultanov (guitar), Jiří “Dany” Svoboda (bass guitar), Jaroslav Ptáček (drums), Hana Ulrychová (vocals), Petr Ulrych (vocals), Martha Elefteriadu (vocals), Tena Elefteriadu (vocals)
Members 1967–1968:
Aleš Sigmund (vocals, guitar, leader), Jan Kukleta (guitar, vocals), Kamil Tomeček (bass guitar), Lubomír Hloušek (bass guitar), Jaroslav Ptáček (drums), Martha Elefteriadu (vocals), Tena Elefteriadu (vocals)
Members 1969–1970:
Aleš Sigmund (vocals, guitar, leader), Bedřich Crha (organ), Cyril Kajnar (bass guitar), Karel Antonín (drums), Martha Elefteriadu (vocals), Tena Elefteriadu (vocals)