Real name: Petter Hjalmar Ohls

Finnish composer and lyricist. Most of his compositions are children's music, such as notable Etkö Ymmärrä, Hyvin Hiljaa, Kolme Yötä Jouluun and Matkalaulu. In addition to children's music, he has also composed choir, church, military and popular music. He has also acted as a conductor for choir music.

Born on October 7, 1948 in Lahti, Finland and died on September 7, 2022 in Jämsä, Finland.