The Killers cover Muse, Run The Jewels puts fans first & more at Lollapalooza day two

Lollapalooza reopened its gates on Friday (Aug. 4) after having closed an hour early the night before due to bad weather. Though ominous looking rain clouds briefly threatened day two, the festival managed to make it through the day without an evacuation.

From heavy rock sets from the likes of Cloud Nothings and Ryan Adams, to hard-hitting hip-hop courtesy of Run the Jewels and surprise last-minute addition Vic Mensa, not to mention a dance party-inducing set from Mura Masa or the indie-pop presence of Tegan and Sara or Foster the People, here are some the best moments from Lollapalooza day two.

Most Dedicated

"Here's the deal, I drove 14 hours to be here," Mura Masa told the dense crowd at the Pepsi stage after performing "Love$ick." Several kids had climbed trees for a better view, but the best spot was surely on the ground where the dance party was happening.

Best Use Of Blow Up Toys

Tegan and Sara's stage set up screamed pool party, considering they performed in front of a large blow up T & S. The twins, who wore matching tropical knee-length blazers, not only delivered a strong set of their most-loved music but also sprinkled in stand-up throughout ("Wave hi to the VIPs! They're slightly older, they need a space," Tegan joked. Sara later ran into the VIP section as Tegan narrated). From deep cuts like opener "Back In Your Head" and "Call It Off," from The Con (which celebrates its 10th anniversary this year), to newer material off Love You To Death, such as "Hang On To The Night," the sisters stayed in perfect harmony -- both in terms of presence and vocal delivery.

Least Interested in Making Small Talk

Oddly enough, the sun came out for Ryan Adams' early evening set. The grunge rocker -- wearing his usual uniform of a denim jacket -- opened with "Do You Still Love Me?" and from there played song after song without much room for small talk. But for a seasoned performer like Adams, whose voice sounds strong as ever (even following an after show at The Vic Friday night), it's safe to say fans wouldn't want it any other way.

Most Laid-Back Rule Makers

"If you feel the need to spontaneously bust out into a mosh pit, we encourage that. But if someone falls, you pick them up," El-P instructed the crowd during Run the Jewels' set on the main stage. Killer Mike had previously asked him to run through the duo's rules, which also included, "Don't violate women or we will punch you in your f---ing face." Throughout the hard-hitting set RTJ continued to make sure fans were having a good time and even brought a super fan onstage to spontaneously -- and flawlessly -- rap "Legend Has It." The two also made sure the crowd obliged by its rules (Killer Mike often asked they take a few steps back), and as if a reward for the fan's ability to listen, RTJ made sure to deliver a fiery set that packed the only punch needed.

Most Surprising Surprise Guest

"You guys like Molly? We got a song called Polly," drummer and vocalist Julien Ehrlich told the crowd before beginning the song solo over just a drumbeat. After the first verse, the rest of the band erupted in a sonic explosion of guitar, bass, keys and trumpet. Elsewhere in the set, Whitney welcomed fellow Chicago native Joey Purp on stage to deliver rapid-fire rhymes over the band's airy instrumentation -- "We met Joey back at Pitchfork Paris," Ehrlich explained. Unlike on the band's more soft-spoken debut album, it's live delivery flowed with electric energy that allowed for a fluid set of both groovable tracks and more tender moments.

Most Last-Minute Lineup Addition

Vic Mensa's 14-minute set -- from 8:16-8:30 -- was added only hours ahead of time (it was deemed a "pop-up" performance). But for the Chicago native, getting there (and starting on time) proved to be no problem. Mensa ended his super short set with the slow jam "We Could Be Free," which he dedicated to "all the lives lost in Chicago this summer." But arguably the most impressive part of his set was that for the first (and probably last) time all weekend, Perry's stage -- the stage that typically caters to electronic music -- wasn't blaring with bass.

Biggest Nostalgia Play

Brandon Flowers wanted to make one thing clear from the moment he walked on stage: he's the man (at least, he is according to The Killers' latest hit "The Man," off its upcoming album, Wonderful Wonderful). From there, the Las Vegas glam rockers largely play up their biggest hits from nearly two decades past, from "Somebody Told Me" off 2004's Hot Fuss to "Spaceman" from 2008's Day & Age, and everything in between -- including a cover of Muse's "Starlight" in honor of the band's day one headlining set being canceled due to the evacuation ("Did you all miss out on Muse last night?" Flowers asked. "We'll try to make it up to you as best we can"). The combination of a clear sky and steady set of well-polished hits (yes, including "Mr. Brightside") ensured they sure did.