Those in attendance at Emo Nite on April 5 got a surprise when The Used singer Bert McCracken and guitarist Joey Bradford welcomed Circa Survive frontman Anthony Green to the stage for a collaborative cover of Nirvana's "Heart-Shaped Box." Now, pro-shot footage of the performance has surfaced and can be seen below.

The vibe in the room was a lot looser than a typical show and after McCracken's introduction, Green's arrival to the stage was met with overwhelming screams from the crowd. Green prefaced the cover, noting the 25th anniversary of Kurt Cobain's death as well as the coming performance marking the first time he's sang together with The Used's frontman.

The two frontman sing mostly in unison as Green comes dangerously close to the gritty, nervous tone Cobain was such a master at conveying. Since Bradford was the only instrumentalist onstage, McCracken called upon the crowd to help out with the brief solo, imploring them to make the guitar sounds with their voice instead. The result was a light-hearted break in the agonizing tension of "Heart-Shaped Box."

The Used and Circa Survive will hit the road together later this year as part of the Rockstar Energy Drink Disrupt Festival. The fest will criss-cross the United States between June 21 and July 28. The see full list of stops as well as the rest of the lineup below.

Get more info here.

Rockstar Energy Drink DISRUPT Festival Dates

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June 21 – Dallas, TX @ Dos Equis Pavilion
June 22 – Austin, TX @ Austin360 Amphitheater
June 23 – The Woodlands, TX @ The Cynthia Woods Mitchell Pavilion presented by Huntsman
June 25 – West Palm Beach, FL @ Coral Sky Amphitheatre at S. Florida Fairground
June 26 – Tampa, FL @ MIDFLORIDA Credit Union Amphitheatre at the FL State Fairgrounds
June 28 – Atlanta, GA @ Cellairis Amphitheare at Lakewood
June 29 – Charlotte, NC @ PNC Music Pavilion
July 2 – Syracuse, NY @ St. Joseph’s Health Amphitheater at Lakeview
July 3 – Toronto, ON @ Budweiser Stage
July 5 – Mansfield, MA @ Xfinity Center
July 6 – Holmdel, NJ @ PNC Bank Arts Center
July 7 – Hartford, CT @ XFINITY Theatre
July 9 – Bristow, VA @ Jiffy Lube Live
July 10 – Clarkston, MI @ DTE Energy Music Theatre
July 12 – Tinley Park, IL @ Hollywood Casino Amphitheatre
July 13 – Thornville, OH @ Legend Valley
July 14 – Noblesville, IN @ Ruoff Home Mortgage Music Center
July 15 – Maryland Heights, MO @ Hollywood Casino Amphitheatre
July 17 – Denver, CO @ Fiddler’s Green Amphitheatre*
July 20 – Irvine, CA @ Five Point Amphitheater presented by Mercury Insurance
July 23 – Auburn, WA @ White River Amphitheatre
July 24 – Boise, ID @ Ford Idaho Center Amphitheatre
July 26 – Chula Vista, CA @ North Island Credit Union Amphitheatre
July 27 – Phoenix, AZ @ Ak-Chin Pavilion
July 28 – Albuquerque, NM @ Isleta Amphitheater
*not a Live Nation date

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