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Joel Page

The Coke and Mentos guys, Fritz Grobe (left) joined by Steven Voltz (right) perform their Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

Fritz Grobe, one of the Coke and Mentos guys, prepares for a live version of their Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland.

Joel Page

Steven Voltz, one of the Coke and Mentos guys, prepares for a live version of their Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

Fritz Grobe, one of the Coke and Mentos guys, prepares for a live version of their Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

The Coke and Mentos guys, Steven Voltz (left) and Fritz Grobe (right) speak before the start of the Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

The Coke and Mentos guys, Fritz Grobe (left) joined by Steven Voltz (right) sprays soda in the air as he does a demonstration before the start of the Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

Fritz Grobe, one of the Coke and Mentos guys, sprays soda in the air as he does a demonstration before the start of the Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

The Coke and Mentos guys, Fritz Grobe (left) and Steven Voltz (right), perform their Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

Fritz Grobe, one of the Coke and Mentos guys, sprays soda in the air as he does a demonstration before the start of the Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

Joel Page

Fritz Grobe, one of the Coke and Mentos guys, celebrates after completing a performance of the Extreme Diet Coke and Mentos Experiments on Thursday, June 28, 2012 in Monument Square in Portland. The performance involved over 100 bottles of soda and over 600 Mentos candies.

PORTLAND, Maine — Eepybird, aka the “Coke and Mentos guys,” helped kick off the Portland Performing Arts Festival on Thursday evening.

The Coke and Mentos guys, Fritz Grobe and Steven Voltz, performed their Extreme Diet Coke and Mentos Experiments in Monument Square. The performance involved over 100 bottles of soda and over 600 Mentos candies.

The four-day festival will include many Maine performers, among other artists, and runs alongside Port Fringe, a fringe festival which runs until July 1.

There are nearly 80 performances scheduled this week. For a full list of all performances, visit the festival website and visit the Fringe site. Performances are offered for both children and adults; be sure to check listings for age-appropriateness. A pass for the entire event is $125; individuals days and events start at $10 and go up to $50.