For this biggest musical event in the Indian financial center since the end of the pandemic, crowds flocked to the Mahalaxmi racecourse.
Some 60,000 people are expected over the two days of the festival, according to the organizers.
"It's the first major American festival to come to India, I couldn't miss it," 29-year-old Narayani Anand told AFP.
"The live music scene is really rebounding," she added.
"It's almost like it means the end of the dark days."
The Strokes, Diplo and Imagine Dragons headline the inaugural concert.
But Binjal Shah, 30, is among those who decided not to go.
"The tickets were exorbitantly expensive. I couldn't justify such an expense," she told AFP.
"There was a lot of hype before the lineup was announced. But the lineup really sucks! My friends who bought tickets in advance were really disappointed."
The Lollapalooza was started in 1991 in Chicago by Jane's Addiction frontman Perry Farrell during the alternative music boom in the United States.
Criticized for its alleged commercialism, it closed in the late 90s but was revived in the early 2000s in the United States.
The festival has since expanded to Latin America, with versions in Argentina, Brazil and Chile, as well as Europe (Sweden, Germany, France).
© 2023 AFP