Frederik recorded "Teen niin kuin teen " (I'll do as I please) in 1978 for his album "Tuu jo tangoon". The Finniah lyrics - taylor-made for Frederik - were provided by Chrisse Johansson. The original song was also performed by Frederik, i.e. a Belgian–Italian singer Frederic Francois (b. Francesco Barracato), who wrote and sang "Valentino" in 1978. You can see him perform the song, here.
44 Finnpicks to go.
Here's the pair: