One of Sidsel’s most exciting projects is the collaboration with ice musician Terje Isungset. On the initiative of Terje Isungset, the world’s “first ice harp” was created in 2009 during the Ice Music Festival, (Geilo). Sidsel contributes with the design and construction of the ice harps. She plays them, both alone and with other ice musicians.

The premiere of the ice harp in 2009 was such a great success, so Sidsel and the ice harps were invited back to Geilo the following year. Another ice festival was organized the same year in the Italian Alps, where Terje Isungset, Lena Nymark and Sidsel played together at an altitude of 3100 meters, inside a glacier!

In 2014, new ice harps were created and played in Geilo. During the “Opening of the 200-year marking of Norway’s Constitution”, (Eidsvoll), Isungset and his band were invited to play during a grand event which was broadcast live by NRK TV.

Sidsel played with the Terje Isungset Ice Quartet at the Kennedy Center in Washington DC in the spring of 2023.