Kalle Kaaja is a Topi Sorsakoski protegee whose past includes two participations in Tangomarkkinat and also rockabilly band The Wagtails. In 2009 he released an album with his band Caravan, produced by before mentioned, late Topi Sorsakoski. He didn't want his band Kulkukoirat to end with him so Kalle Kaaja stepped in and is now the solist. Their song Sielusi kaipaa surely will appeal to fans of this kind of music....