 Jeronimo were founded in 1969 by Rainer Marz (lead guitar, vocals), Gunnar Schäfer (bass guitar, vocals) and Ringo Funk (drums, lead vocals).Their first two singles released in 1969-1970, "Heya" and "Na Na Hey Hey", became hits in several European countries.In 1970 Jeronimo toured successfully through Germany with Steppenwolf.