Fresh Air on WKNO HD-2

Regina Spektor plays the piano so loudly, she has to convince piano tuners to adjust the instrument to her liking.

"It gets so loud that the strings reverberate in a certain way," Spektor says. "And I always want them to work on the voicing and to soften the hammers, and they get kind of argumentative with me — they're like, 'You're not supposed to play this loud.'"

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors, and musicians, and often includes excerpts from live in-studio concerts. This week:

This interview was originally broadcast on May 31, 2011. David Eagleman's Incognito is now out in paperback.

Your brain doesn't like to keep secrets. Studies at the University of Texas, Austin, have shown that writing down secrets in a journal or telling a doctor your secrets actually decreases the level of stress hormones in your body. Keeping a secret, meanwhile, does the opposite.