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Lollapalooza 2019 brought hundreds of thousands of music fans to Grant Park for four days this weekend. Headliners included Twenty One Pilots, Childish Gambino, Ariana Grande, J Balvin, Tame Impala, and dozens of other artists. baiduhai photographers Armando L. Sanchez, Erin Hooley, Camille Fine and Antonio Perez tell the story of the city’s biggest music festival through their images below.

Ariana Grande performs during the last day of the 2019 Lollapalooza Music Festival in Grant Park Sunday Aug., 4, 2019, in Chicago. (Armando L. Sanchez/baiduhai)
Ariana Grande performs during the last day of the 2019 Lollapalooza Music Festival in Grant Park Sunday Aug., 4, 2019, in Chicago. (Armando L. Sanchez/baiduhai)
Childish Gambino performs at Lollapalooza on Aug. 2, 2019, in Chicago.
Childish Gambino performs at Lollapalooza on Aug. 2, 2019, in Chicago.
Brianna Zoran, 21, sits on 20-year-old Hunter Deturk's shoulders while dancing near the Perry's stage during the last day of the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Brianna Zoran, 21, sits on 20-year-old Hunter Deturk’s shoulders while dancing near the Perry’s stage during the last day of the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
A fan watches Kacey Musgraves perform during the 2019 Lollapalooza Music Festival in Grant Park on Aug. 4, 2019.
A fan watches Kacey Musgraves perform during the 2019 Lollapalooza Music Festival in Grant Park on Aug. 4, 2019.
Ruben Sebastian holds up his daughter Noa Sebastian, 4, while she makes a rock symbol with her hands during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Ruben Sebastian holds up his daughter Noa Sebastian, 4, while she makes a rock symbol with her hands during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
J. Balvin performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
J. Balvin performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Gunna performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Gunna performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Fans watch 21 Savage perform at Lollapalooza on Aug. 2, 2019.
Fans watch 21 Savage perform at Lollapalooza on Aug. 2, 2019.
Gary Clark Jr. performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Gary Clark Jr. performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Janelle Monáe performs at Lollapalooza on Aug. 2, 2019.
Janelle Monáe performs at Lollapalooza on Aug. 2, 2019.
Attendees of the 2019 Lollapalooza Music Festival dance to Crizzly in Grant Park Aug. 3, 2019.
Attendees of the 2019 Lollapalooza Music Festival dance to Crizzly in Grant Park Aug. 3, 2019.
Attendees climb on a high-voltage box at the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Attendees climb on a high-voltage box at the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Maggie Rogers performs during the second day of the 2019 Lollapalooza Music Festival at the Bud Light stage on Aug. 2, 2019.
Maggie Rogers performs during the second day of the 2019 Lollapalooza Music Festival at the Bud Light stage on Aug. 2, 2019.
Garbage sits outside a trash can near the entrance of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Garbage sits outside a trash can near the entrance of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Attendees dance at the Perry's stage during the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Attendees dance at the Perry’s stage during the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Lil Wayne performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Lil Wayne performs during the third day of the 2019 Lollapalooza Music Festival on Aug. 3, 2019.
Attendees walk near the main entrance as the sun sets during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Attendees walk near the main entrance as the sun sets during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Shannon Steele, 23, of Boston, Kathryn Rodgers, 18, and Gabriel Schlabach, 23, of Goshen, Ind., pose for a photograph during the 2019 Lollapalooza Music Festival , in Chicago.
Shannon Steele, 23, of Boston, Kathryn Rodgers, 18, and Gabriel Schlabach, 23, of Goshen, Ind., pose for a photograph during the 2019 Lollapalooza Music Festival , in Chicago.
An attendee of the 2019 Lollapalooza Music Festival waits for Fantastic Negrito to take the stage in Grant Park on Aug. 3, 2019.
An attendee of the 2019 Lollapalooza Music Festival waits for Fantastic Negrito to take the stage in Grant Park on Aug. 3, 2019.
Lucy, 4, left, and Hunter Marren, of Chicago, attend the 2019 Lollapalooza Music Festival on Aug. 2, 2019.
Lucy, 4, left, and Hunter Marren, of Chicago, attend the 2019 Lollapalooza Music Festival on Aug. 2, 2019.
Fans hold cellphones while Hayley Kiyoko performs during the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Fans hold cellphones while Hayley Kiyoko performs during the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Lead singer of Idles, Joe Talbot, performs during the 2019 Lollapalooza Music Festival on Aug. 2, 2019.
Lead singer of Idles, Joe Talbot, performs during the 2019 Lollapalooza Music Festival on Aug. 2, 2019.
Kacey Musgraves performs during the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
Kacey Musgraves performs during the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
A festival goer sits on shoulders during 21 Savage's performance at Lollapalooza on Aug. 2, 2019.
A festival goer sits on shoulders during 21 Savage’s performance at Lollapalooza on Aug. 2, 2019.
Hayley Kiyoko performs during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Hayley Kiyoko performs during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Fans cheers while Hayley Kiyoko performs during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Fans cheers while Hayley Kiyoko performs during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Normani performs at Lollapalooza on Aug. 1, 2019, in Chicago.
Normani performs at Lollapalooza on Aug. 1, 2019, in Chicago.
Saba performs during the 2019 Lollapalooza Music Festival in Grant Park on Aug. 1, 2019.
Saba performs during the 2019 Lollapalooza Music Festival in Grant Park on Aug. 1, 2019.
A fan with numerous wristbands watches Rosalia perform at the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
A fan with numerous wristbands watches Rosalia perform at the 2019 Lollapalooza Music Festival on Aug. 4, 2019.
A view of Grant Park as the sun sets during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019, in Chicago.
A view of Grant Park as the sun sets during the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019, in Chicago.
The Strokes perform during the first day of the 2019 Lollapalooza Music Festival in Grant Park on Aug. 1, 2019.
The Strokes perform during the first day of the 2019 Lollapalooza Music Festival in Grant Park on Aug. 1, 2019.
A Chicago police officer keeps watch as fans head toward the turnstiles at Lollapalooza in Grant Park on Aug. 1, 2019.
A Chicago police officer keeps watch as fans head toward the turnstiles at Lollapalooza in Grant Park on Aug. 1, 2019.
Saul Ruales picks up trash near the Perry's Stage after the the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.
Saul Ruales picks up trash near the Perry’s Stage after the the first day of the 2019 Lollapalooza Music Festival on Aug. 1, 2019.