Weeks after his abrupt departure from Dangerbird Records, the prominent indie label he co-founded, Jeff Castelaz has been named president of Warner Music Group’s Elektra Records.In a round of musical chairs, Castelaz is essentially replacing another former indie music entrepreneur, John Janick, whose move to Universal Music Group’s Interscope Geffen A&M unit as president-COO was also officially announced Thursday. Both appointments had been widely rumored. Castelaz will oversee all areas of Elektra’s activities, reporting to Atlantic Records chairman-CEO Craig Kallman and chairman-COO Julie Greenwald. The historic label was founded in 1950 by Jac Holzman. Label’s current roster includes Cee Lo Green, Ed Sheeran and Marina and the Diamonds. Castelaz co-founded the Silver Lake-based Dangerbird in 2003, which developed such acts as Grammy nominees Silversun Pickups and soul unit Fitz & the Tantrums. He founded Cast Management in 1992, and continues to manage Dropkick Murphys and other acts. Last month, Castelaz ankled Dangerbird with the professed intention of concentrating on his management firm (Daily Variety, Sept. 13). He was replaced by the label’s head of promotion Jenni Sperandeo. Castelaz takes the Elektra reins from Janick, another highly prized former indie label head who relaunched the WMG label in 2011. Former Elektra co-president Janick will now be charged with heading IGA in tandem with IGA chairman-CEO Jimmy Iovine. The unit’s acts include Lady Gaga, Eminem, U2, No Doubt and Lana Del Rey; it also is distributing Madonna’s releases. Janick founded his Fueled By Ramen imprint in his dorm at the University of Florida in Gainesville. The label, which was ultimately distributed by WMG, developed such pop and rock acts as Fall Out Boy, Panic! At the Disco, Paramore and Fun. At Elektra, Janick helped reestablish the company with the release of such hit titles as Bruno Mars’ “Doo Wops & Hooligans.” His former co-president Mike Caren was recently promoted to president of A&R at WMG. Janick will now be based in Santa Monica.