While the audition videos are probably rolling in for Machine Head after announcing open online auditions last week, they’ve likely got one that can move to the top of the pack. Former Fear Factory member Christian Wolde Olbers has sent an audition video. Wolbers spent nearly 15 years in Fear Factory, initially as their bassist, then switching over to guitar in 2002 following Dino Cazares’ initial departure. More recently, he’s been in Arkaea, the band he’d formed with original FF drummer Raymond Herrera. While this is only a small portion of the audition, he nails “This is the End,” or at least what we’re seeing online. And it doesn’t seem like he would have any problem transitioning back to bass.