Roppongi isn't the first place that jumps to mind when you're looking to have a night out with Beethoven. A concert hall with plush velvet seats, women in pearls listening to Symphony No. 9 — that's more of a Ginza thing.

But Tahlia Petrosian, a viola player for the Gewandhaus Orchestra based in Liepzig, Germany, is trying to change the way classical music concerts are perceived.

"It's important that we offer new formats of classical music so that we can show we're still relevant," she says. "So that everybody can experience classical music in a way that they really want to."