Christiansen also provided organ recitals in the Salt Lake Tabernacle and the Conference Center.

He was the accompanist for his church Sunday School and priesthood services, and a substitute ward organist at the age of eleven.

[1] From 1972 to 1982, Christiansen was the organist for St. Mark's Episcopal Cathedral in Salt Lake City.

Christiansen was also organist at Congregation Kol Ami, a Jewish synagogue in Salt Lake City.

He wrote the music to the LDS Church hymn "In Fasting We Approach Thee".