Richard Nixon, 1969: The Mormon Tabernacle Choir accompanied by the United States Marine Band performed the national anthem. Richard Nixon, 1973: Jazz great Ethel Ennis sang the national anthem.

In this Jan. 20, 2021, file photo, Lady Gaga is escorted by U.S. Marine escort Capt. Evan Campbell to sing the National Anthem at the inauguration of U.S. President-elect Joe Biden on the West ...

Lady Gaga’s appearance at the 59th US presidential inauguration brought positivity and hope at a time when the United States is more divided than ever before.