He attended Brigham Young University where he directed the BYU Cougar Marching Band and graduated with a degree in Music Composition.
Merrill hired Jenson to compose the score to the sequel of his Academy Award-winning documentary The Great American Cowboy.
Jenson worked for many years with Bonneville Communications writing music for films and commercials for the Church of Jesus Christ of Latter-day Saints including The Phone Call (1977).
During this time Jenson composed music for the award-winning Homefront commercials and films such as How Rare a Possession: The Book of Mormon.
A career highlight for him was composing the score for the critically acclaimed film Emma Smith: My Story which played in many theaters across the country.