TidbitsMarch 31, 2013 12:03 PM ET

Christian Olde Wolbers (ex-Fear Factory) is among those auditioning for Machine Head.

Ex-Fear Factory member Christian Olde Wolbers is apparently among those who have thrown thrown their hat in the ring for the open bass spot in Machine Head. Here is Wolbers' audition video: Wolbers spent a total of nearly 15 years as a member of Fear Factory, and has most recently been performing with Arkaea.