The bard Edvard Rosenblom, born in Oxelösund, raised in Södermanland and later studied in Uppsala, was Ulf Peder Olrog's alter ego. The song production was rich and the successes were many: Bergakungens land, Bullfest, Ett öre mer för mjölken, Mera bruk i baljan boys, Rumba i Balders hage, Samling vid pumpen, Schottis på Valhall, Syföreningsboogie, Ubåt till salu and Violen