Scandinavia is no stranger to good “instro” music. The past 60 years have produced guitar-fueled legends like the Spotnicks (Sweden), Jørgen Ingmann (Denmark), and Laika & the Cosmonauts (Finland). Hailing from Norway is Steinar Karlsen, a fine player who instinctively understands the guitar music of the early ’60s. On his new album, Tur, Karlsen covers …