Children sang and spoke selected readings that recalled King, killed in 1968.

"Martin Luther King walked so that Barack Obama could run," said one boy. "Barack Obama ran so that all children could fly," added another, standing a few feet away from the first African-American ever elected president.

At the Lincoln Memorial a few hours later, King's son, Martin Luther King III, had a brief speaking role.

For the most part, the program was a festival of music, the songs chosen to make their points. Mary J. Blige sang, "Lean on Me," Springsteen performed "The Rising," and Obama mouthed the words as 89-year-old Pete Seeger pitched in with "This Land is Your Land."

Many in the crowd sang along with Beyonce's soulful finale, "America the Beautiful."

In film clips at earlier moments, Obama was cast as heir to Franklin Delano Roosevelt, John F. Kennedy and even Lincoln, who the president-elect said was "the man who in so many ways made this day possible."

As Obama moved around town in a pre-inaugural motorcade, his aides blanketed Sunday's interview programs.

With the nation facing the most difficult economic crisis since the Great Depression, they all agreed that recovery was the principal challenge facing the new president.

"What's important ... is ensuring that those that have had the short end of the stick for the last few years — make sure that they get the help that they need, that this administration begins to create the jobs and give some financial stability to families so that they can feel hopeful about going forward," said Robert Gibbs, who will serve as Obama's White House press secretary.

"Three million, 4 million jobs is going to make a very big difference," said Lawrence Summers, a top economic adviser to the incoming president, referring to the goal Obama has set. "It all depends on psychology, but we are going to be leaning forward throughout this administration. The president's made it clear that our errors are not going to be of standing back."

The Democratic-controlled Congress has already made a quick start on the president's recovery program, clearing the way for use of the second $350 billion for the financial industry bailout created last fall, and launching an $825 billion stimulus measure. Democratic leaders have pledged to have the legislation ready for Obama's signature by mid-February.

House Speaker Nancy Pelosi, D-Calif., also endorsed Obama's call for a summit meeting to begin controlling spending on huge government benefit programs such as Social Security, Medicare and Medicaid. She said even benefit cuts should be included as an option for discussion. "You put everything on the table. The only thing we didn't want to put on the table is eliminating" the programs, she added.

The Senate appears ready to confirm several of Obama's Cabinet appointees as soon as he signs the formal nomination paperwork on Tuesday, although not everything has been smooth for Obama and his transition team.

Treasury Secretary-designate Timothy Geithner's confirmation has been delayed for at least a few days because of his disclosure that he had failed to pay some federal taxes earlier in the decade. Bill Richardson withdrew as Obama's commerce secretary choice because of a grand jury investigation in New Mexico, where he is governor, and Obama himself was tripped up by controversy surrounding the appointment of his successor in the Senate.

Sen. Roland Burris, D-Ill., was sworn in Thursday — and swiftly voted with Obama to release the bailout funds. The president-elect and Senate Democrats had initially balked at allowing him to take the seat, saying his appointment was tainted because Gov. Rod Blagojevich faces criminal charges that he sought something in return for appointing Obama's successor.