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Devo frontman Mark Mothersbaugh says he's "shocked and saddened" by the sudden death of Bob Casale, and adds that the guitarist will be "greatly" missed. 

Mothersbaugh and Casale were founding members of Devo, which they formed with Bob's brother Gerald in the early '70s.  Mark says in a statement that with Bob's passing he's not only lost a bandmate, but also a "great friend" and collaborator.  He credits Casale as an "integral" part of Devo's sound, and a valuable contributor to Mutato Muzika, Mothersbaugh's music production company. 

Mark says over the past two decades he and Bob teamed up to write music for "60 or 70 films and television shows, not to mention countless commercials and many video games" through Mutato.  He adds that Bob was "instrumental in creating the sound of projects as varied as 'Rugrats' and Wes Anderson's films." 

Bob passed away suddenly on Monday.  His brother Gerald told TMZ Bob suffered from "health complications that led to heart failure."  Bob was 61. 

The Casale brothers were founding members of Devo along with Mothersbaugh.  The post-punk new wave band is best known for the 1980 hit "Whip It."  The band's last album, Something for Everyone was released in 2010. 

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