Gunnar Idenstam was born in 1961 in the far north of Sweden. As a classical organist he was trained by, among others, the legendary Marie-Claire Alain. In 1984 he was awarded 1:st prize in the competition "Grand Prix de Chartres" in improvisation and since then he pursues a career as a recitalist, composer, arranger and folk musician which takes him to many parts of the world.
As a folk musician he stands quite apart in his transposition of the special qualities of the Swedish folk music tradition to church organ or harmonium and keyboard. His style as a composer/improviser is a felicitous amalgamation of art music, folk music and the more symphonically oriented rock music that represents something not previously attempted in organ arts. He also arranges both symphonic music (Mahler, Debussy and Ravel etc.) and different kinds of popular ethnic music like from the show "Riverdance" for organ and he regularly performs with leading musicians from various genres of music.