Seglem's main instrument is the tenor saxophone and he has played an important role on the Norwegian jazz scene. His CD-production counts 19 solo-albums and 17 albums with different ensembles (2017). Already at an early stage in his career he became interested in more diverse and genre crossing perspectives of music. Especially he has been deeply involved with Norwegian folk music and has explored it as a basis for improvisation and composition. For Seglem is much more than an instrumentalist, he has worked widely and diversely as a composer -developing new contemporary forms on the basis of jazz, folk music and more eclectic inspirations- and has also been instrumental to the growth of cross-over expressions and projects as a producer and record label manager for NORCD. 

International renown has grown steadily and not least his releases Ossicles, Som spor, JazzBukkBox and Nordic Balm have captivated international critics and audiences. On these records the use of goat horns and other traditional instruments -notably the Hardanger fiddle- is masterly and excitingly blended with a plethora of modern and eclectic elements; electronic loops, jazz improvisation, world music traits and rock characteristics. Seglem often returns to the notion of the acoustic heart of his music, which is the grounded and timeless leitmotif. With this heart intact electronic elements and engineered sounds, as well as genre-specific traits, create a dynamism that is reciprocally enhancing.