Mind you, this is the Pitchfork Music Festival, not another World's Columbian Exposition. Nonetheless, in one corner of Chicago's Union Park during this weekend's annual indie-rock fest, there was a contraption called the Electromusical Energy Visualizer.
Fans enter one of its four booths (sponsored by online service eMusic), don headphones and place one hand on an electric sensor. They then listen to snippets of four songs, each by one of the bands on this year's Pitchfork schedule.
At the end of each song sample, a photo is snapped. Like an amusement park ride, you exit the booth and receive your photo set -- each shot overlaid with a color from the spectrum allegedly corresponding to your "musical aura" while listening to the song.
Yes, it's a 21st-century mood ring.
My session seemed accurate enough: Lower Dens (light yellow, mildly happy), Beach House (bright yellow, very happy, see photo at left), Iceage (goofy expression on my face, but no mood response) and A$AP Rocky (no mood response).