I go to a concert to listen to music, not create my own. It's probably why I'm so against the idea of clapping along to songs. The artist is there to perform "their" songs; why go and mess with that?

With the weekend-long Festival, attendees are given the opportunity to create their own music, from clapping along to Andrew Bird to playing Guitar Hero in various vendor tents. But one of the more unique opportunities is Lemur: League of Electronic Musical Urban Robots, a Brooklyn-based group that blends music and art.

They have on display this weekend the intriguing Slime-O-Trons, which are MIDI controllers that employ black goo (for a lack of a better term) applied to copper nails. These generate a MIDI signal which is then sent to a computer and turned into a sound. The result can be quite refreshing and strikingly haunting at the same time.

According to artist Leif Krinkle, who helped fabricate the musical sculpture after it was conceived by Lemur founder and director Eric Singer, Festival-goers have been slightly reluctant to approach the newfound musical experience.

"People are hesitant to tough things," he said. "We're in a culture where we're taught it's not OK to touch things." And yet, fans have no problem reaching from the barricades to slap Iggy Pop in the chest.