Cook made recordings with Sverre Cornelius Lund and Arnstein Johansen in the 1960s, and he appeared on NRK with Kjell Halvorsen (piano) and Bjørn Krokfoss (drums) from 1967 onward. He wrote the film score for Gylne ungdom (1956) and contributed to the volume Toner fra tigerstaden: musikk, mennesker og miljø fra Oslos revyliv 1905–78 (Tones from Tiger Town: Music, People, and the Ambiance of Oslo's Cabaret Life, 1905–78; Fabritius, 1979). His band participated in recordings with artists such as Britt Langlie, Wenche Myhre, and Jan Høiland, and it was a fixture in the early episodes of Roald Øyen's television program Bit for bit, bilde for bilde.