Pekka Erkki Juhani Tammilehto, better known by his stage name Topi Sorsakoski, was a Finnish singer. His father was tango singer Yrjö Johannes aka Ylli Tammilehto. Sorsakoski started his career together with his brother, Antti, who had played in various bands together with Juice Leskinen, in the Kalle Kiwes Blues Band.
Some of Sorsakoski's cousins are also musicians: Seppo Tammilehto, who has played in Alwari Tuohitorvi and later had a solo career, and Juhani Tammela, who has played old dancehal...
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