AMERICAN IDOL: Ryan Seacrest. CR: Michael Becker / FOX

May 15th is fast approaching, which means Wango Tango is upon us. As we reported last week, Usher is headlining the event, but a number of big names have been added to the lineup.

Adam Lamber, Ludacris, Akon, Ke$ha, Iyaz and B.O.B as well as teen sensation Justin Bieber have all been added to the list of performers for the yearly festival.

American Idol host and KIIS FM’s top morning personality, Ryan Seacrest will M.C. Wango Tango. The rest of the KIIS FM airstaff will help Seacrest out.

Tickets are currently on sale via the KIIS FM website, through Ticketmaster.com or by phone (800) 745-3000.

Wango Tango 2010 takes place at the Staples Center in Los Angeles.