Kamala Harris appeared to be a JLo fan. Photo: AP
Woman Gaga carried out the United States nationwide anthem. Picture: AP
As she left the podium, she spoke with Mr Biden and glanced at former president Barack Obama.
Lopez sang a line in Spanish throughout her performance
Joe Biden greeted Lady Gaga during his inauguration event. Pic: AP
Jennifer Lopez performs at the inauguration event, as former vice president Mike Pence sees on. Photo: AP
Gaga wore a dove pin and a large red sculpted skirt as she sang into a gold microphone, providing a psychological rendition of The Star-Spangled Banner.
She stated “one nation under God, indivisible, with liberty and justice for all” in Spanish prior to vocalizing “Lets get loud” and then concluding her performance by singing the line “This land was produced you and me”.
She then blew a kiss to the crowd and reversed to state a couple of words to Vice President Kamala Harris before leaving.
Gaga campaigned in Pennsylvania with Mr Biden before his election win in November, and the pair interacted when he was vice president to combat sexual assault on college schools.
The Born This Way vocalist was followed at Wednesdays event by Lopez, dressed all in white, who carried out a medley of This Land Is Your Land and America The Beautiful.
The vocalist, understood as J Lo by her fans, began gradually before ramping up her performance, including a line in Spanish.
Leaving the podium, he wore his cowboy hat once again, and hugged and shook hands Mr Obama.
Brooks had bewared to insist his choice to appear at Mr Bidens inauguration was non-political and in the spirit of unity.
The nation star rejected an opportunity to bet Mr Trump in 2017, pointing out a scheduling conflict, but previously carried out during the inaugural celebration of Mr Obama in 2009.
More A-list stars are taking part in a TV program called Celebrating America, hosted by Tom Hanks, which is filling in the usual main inaugural balls.
Bruce Springsteen, John Legend, Katy Perry, Demi Lovato, Foo Fighters, Justin Timberlake and Bon Jovi are due to appear the occasion, while Hamilton developer Lin-Manuel Miranda will contribute a classical recitation.
The event remained in stark contrast to Donald Trumps inauguration 4 years earlier when he had a hard time to bring in prominent artists to carry out.
Live updates as Joe Biden is sworn in as United States president
Brooks performed Amazing Grace. Pic: AP
Garth Brooks used denims and a black cowboy hat. Pic: AP
Lady Gaga belted out Americas nationwide anthem and Jennifer Lopez performed a moving medley, including a line in Spanish, at the star-studded inauguration event for brand-new US President Joe Biden.
The two pop superstars were likewise signed up with by country hitmaker Garth Brooks who sang an emotional rendition of Fantastic Grace at the event in Washington DC.
Brooks raised a few eyebrows as he emerged to carry out at the ceremony outside the United States Capitol wearing jeans and a black stetson.
Doffing his hat, he sang Amazing Grace a capella and asked the audience to sing a verse with him, stating: “Not simply the individuals here, however individuals in the house, to work as one joined.”