08/13/2012 12:32 pm ET

George Dennehy, Armless Guitarist, Performs 'Iris' With The Goo Goo Dolls (VIDEO)

If you saw George Dennehy's performance of The Goo Goo Dolls' "Iris" at a local festival earlier this summer -- or later on YouTube -- you would have known that he's something special. The 18-year-old musician was born without arms, but plays the guitar flawlessly with his feet. The video clip has since garnered nearly half a million views -- and the attention of The Goo Goo Dolls. Last week, the band invited Dennehy on stage to perform the same song with them at Musikfest in Bethlehem, Pennsylvania.

The golden opportunity arrived when Mike Malinin, the band's drummer, saw Dennehy's performance on YouTube. "We sound-checked with him to make sure he knows how to play the song," Malinin told Lehigh Valley Live. "I think he knows it better than we do."

According to Huffington Post commenter Derry Miller, who attended the show at Musikfest, Dennehy performed a few songs before the main act began, including a cover of Pink's "Perfect."

According to a Musikfest press release, Dennehy, who was adopted from Romania as an infant, is the only known person in the world who is able to play classical string music with his feet.

Dennehy chatted with Huffington Post Entertainment blogger and whatstrending.com co-founder Shira Lazar about his musical career.

"Every person has their purpose here," he said. "We're all here for a reason. Don't let anything get in someone's way to do what they feel called to do. I just want people to see that even though I don't have arms I'm still striving to do what I want to do in my life."

What did you think of Dennehy's performance? Are you inspired by his positivity? Sound off in the comments below or tweet @HuffPostTeen!