What started out as an alternative music festival in 1991 is now pretty much a mainstream music event. Which explain the headlining names announced for this year's Lollapalooza in Chicago this August.Take a look at the first two names on the Lollapalooza website: The Weeknd and Bruno Mars. Scroll down further and you'll find Portugal. The Man, Walk The Moon, Dua Lipa and Camila Cabello. And, of course, there's James Bay.

The business reasons for this are obvious; the mega-artists sell enough tickets to pay for all the up and coming artists and "baby bands". You're not going to draw 100,000 people to Grant Park in Chicago with a line up of cult favorites. But for a concert goer, it's also a win. The total line up is a lot of bang for your buck. Actually well north of 300 bucks for a four day general admission package; well north of four figures for VIP packages.

And, let's not forget some of the "senior" acts, including founder Perry Farrell, Grammy host LL Cool J  and Kalamazoo home owner Jack White.

Lollapalooza will be in Chicago from August 2nd through 4th, so you'll have to make the hard decision between Kalamazoo's Ribfest and Lollapalooza.

Here's what you need to know. Lollapalooza information is here, ticket information, too.

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