When the two young stars from the Curtis Institute of Music were summoned to a hotel room, one by one, to try out some high-quality violins, they were met with an odd sight.
The room was divided in two with white sheets, and the violinists were greeted by scientists wearing tinted welder's goggles.
"It was very mysterious and kind of weird," said Nikki Chooi, a student at Curtis since 2007.
Equally weird, by some reckoning, was what happened next.
Chooi, fellow Curtis student Benjamin Beilman, and 19 others were asked to compare the sound of three modern violins with that from three made by the Italian masters: two by Antonio Stradivari and one by Guarneri del Gesu. Not only did the modern violins hold their own, but most of the musicians were unable to tell if their favorite instrument of the six was new or old.