The summer event will celebrate Barack Obama's inauguration
Her Etta James cover reduces many to tears at Neighborhood Ball
Singer reportedly got help from Secret Service
And LA radio station will broadcast Inaugural Celebration concert live
Usher, Sheryl Crow, Shakira also join official bill
Jennifer Hudson also earns several nods
Singer announces full European tour
Plus Peter Gabriel is in the running
'Sasha Fierce' is pop star's third straight Number One debut
Singer wants to follow in husband footsteps at British Festival