 Kempers akapinda musarudzo yeGerman yeEurovision muna 1988 senhengo yeboka Rendezvous ne Du bist ein Stern für mich, iyo yakangokwanisa nzvimbo yegumi. Mukutanga kwa1990, akaonekwa pachirongwa cheterevhizheni achitevedzera Jennifer Rush, uye akacherechedzwa naRalph Siegel, uyo akamupa mukana wekuita imwe yenziyo dzake seduet nemuimbi weSlovenia Daniel Kovac musarudzo yeEurovision ya1990, yakaitwa musi wa29 Kurume muMunich. Kempers naKovac vakapfuurira kukunda kusarudzwa nenziyo, yakanzi Frei zu leben Hapana rusununguko rwokurarama. Kunyange zvazvo kukunda kwacho kwaiva nemuganhu wakakura, kwakanga kusingatarisirwi, sezvo rwiyo rwacho rwakanga rusingaoneki chete nevakawanda sechinhu chisina maturo, asi rwakaonekwawo nevakawanda vaiona kuti Kovac akanga apa kuita kunonzwika kunonzwika. Frei zu leben yakaenda mberi ku 35th Eurovision Song Contestrakaitwa musi wa5 Chivabvu muZagreb, uko rakava rechipfumbamwe pamakwikwi makumi maviri nemaviri. 