Complex sentence: Jochum joined the band in 2006 as the bands percussionist during the "See You on the Other Side" and the 2006 "Family Values Tour", during the bands unplugged concert Jochum played drums due to Silveria's hiatus.
Split into simpler sentences: Jochum joined the band in 2006 as the band's percussionist during the "See You on the Other Side" and the 2006 "Family Values Tour". During the band's Unplugged concert, Jochum played drums due to Silveria's hiatus.