Lawmakers jammed with the country group Lady Antebellum at the annual GRAMMYs on the Hill event Wednesday night. 

Minority Whip Steny HoyerSteny Hamilton HoyerTrump taps USTR's Gerrish as acting head of Export-Import Bank Pelosi needs big cushion to return as Speaker Senior Dem on leadership shake-up: ‘All of us have got to go’ if GOP holds House MORE (D-Md.) was the first member onstage, but he was soon joined by Majority Whip Kevin McCarthyKevin Owen McCarthyHenry Kissinger, Tim Cook among guests at White House state dinner To keep control of House, GOP must have McCarthy as next Speaker Republican candidate favored in Arizona special House election MORE (R-Calif.) and Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiGOP anxiety grows over Trump’s Iran decision Pelosi rejects litmus test on abortion The Hill's Morning Report: Koch Network re-evaluating midterm strategy amid frustrations with GOP MORE (D-Calif.).

Pelosi even came prepared with a maraca.

McCarthy, who co-chairs the Recording Arts and Sciences Congressional Caucus with Hoyer, was honored along with Pelosi for their advocacy of the music industry.

“There’s one core value in this country, and that’s fairness,” McCarthy said after receiving his award.

That statement was echoed in Rep. Doug Collins's (R-Ga.) performance later in the evening. He accompanied songwriters Gary Burr and Victoria Shaw in a live performance of “Fair,” a song about copyright parity that the trio wrote together.

“I don’t want more than my share, I just want what’s fair,” Burr and Shaw sang. Collins, who has sponsored the Songwriter Equity Act, provided backup vocals and percussion.

The message of fairness will be conveyed by hundreds of musical professionals from across the United States, as they head to Capitol Hill Thursday for The Recording Academy’s annual advocacy day.

“Harmony, unity, and parity,” which comprised the motto of the event, were three principles highlighted in The Recording Academy CEO Neil Portnow’s remarks. He announced a “MusicBus proposal."

“For all the complexities of the MusicBus concept, its goal is actually so simple it could fit on a bumper sticker: ‘Fair market pay to all music creators across all platforms,’ ” he said to applause.

Also in attendance were Rep. Judy Chu (D-Calif.), among other members of Congress; Dionne Warwick; Joy Williams of musical group The Civil Wars; Hanson; Wesley Schultz of The Lumineers; and musical group Los Lonely Boys.