So sad. Mark Bell, the electronic music pioneer who found fame with LFO, passed away earlier this month, following ‘complications after an operation,’ his label said in a statement on Oct. 13.

Mark Bell of the electronic music group LFO died earlier this month, his label Warp Records announced Monday, Oct. 13. Since the news of his death emerged, celebrity friends have taken to Twitter to honor the music legend.

Mark Bell Dead — LFO Member Dies Following Operation Complications

“It’s with great sadness that we announce the untimely passing of Mark Bell of LFO who died last week from complications after an operation. Mark’s family and friends request privacy at this difficult time,” Mark’s label said in a statement, according to Rolling Stone.

Unfortunately, no other details were revealed.

Mark founded LFO (not the ’90s pop group, whose hits include “Girl on TV”) with Gez Varley in 1988. The band created three albums: Frequencies, Advance and Sheath between 1989 and 2003. Their biggest hit was their 1990 single “LFO,” which became a top 20 hit on the U.K. music charts.

While Gez left LFO in 1996, Mark continued to perform under the moniker, but shifted his focus to production. His most famous work includes Björk’s “Homogenic” and Depeche Mode’s “Exciter.”

Mark Bell Dies: Celebs React On Twitter

Following the news of Mark’s death, celebrity friends, including Erol Alkan, Jimmy Edgar and Sohn flocked to Twitter to pay tribute to the electronic music pioneer.

Deeply saddened to read that Mark Bell from LFO has passed away. — erol alkan (@erolalkan) October 13, 2014

We have lost a pioneer and one of the friendliest guys i have known. Mark Bell of LFO. You will be missed and your music will live forever. — JIMMY (@jimmyedgar) October 13, 2014

Salute to the great Mark Bell. Such a pioneer that helped found today’s music. Thank you for everything you made. — SOHN (@SOHN) October 13, 2014

Furthermore, after Mark’s passing was confirmed, Björk shared LFO’s “Love Is the Message” with her Twitter followers.

Our thoughts go out to Mark’s family and friends during this difficult time.

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