Bjorn Thorsrud

Bjorn Thorsrud (October 7, 1963 – October 20, 2021) was an American music producer, programmer, and audio engineer who had also engineered, mixed, or has contributed production or programming to every Smashing Pumpkins record since 1998's Adore to 2012's Oceania. Billy Corgan estimates that during this era, he spent more time with Thorsrud in the studio than he did with other band members. He considered Thorsrud as part of his own family, and there was even a Christmas holiday or two shared between only the two of them, as they had no one else to spend Christmas with.

Thorsrud previously worked for the Taj-Motown Record Company and established his own record label, Tri Records. He held a bachelor's degree in physics and music from the University of Nevada, Reno.

Other artists he had worked with include The Frogs, Dave Mason, Whitesnake, and Shania Twain.

On October 20, 2021, Thorsrud died suddenly of what is believed to have been a heart attack.