Donald Trump

When Donald Trump announced Tuesday that he's running for president, the soundtrack at the Trump Tower event was Neil Young's "Rockin' in the Free World," which was played loudly and repeatedly. But afterward, Young said Trump had used the song without permission — and that he's a Bernie Sanders guy, anyway.

Young's manager released a statement saying:

Saying that the United States can no longer beat its international competition, Donald Trump announced his candidacy to be the country's next president.

"Our country needs a truly great leader, and we need a truly great leader now," Trump said. He said that rather than being a cheerleader for America, President Obama has been "a negative force."

We need somebody that can take the brand of the United States and make it great again," Trump said. At one point, he also said the country needs a leader who has written The Art of the Deal — his 1987 book.

This post was updated at 12 p.m. ET

The 2016 presidential race has attracted the widest and most diverse field of major candidates in anyone's memory. Yet, even in this crowd, Donald John Trump Sr. stands apart. On Tuesday, he joined that field, two days after his 69th birthday.

Donald Trump, or "The Donald" as he often styles himself, has high national name recognition as a billionaire real estate developer and TV celebrity.