People who knew Dzhokhar Tsarnaev just have a hard time squaring the man they knew, with the violence in Boston. Sierra Schwartz went to Cambridge Rindge and Latin high school with the suspect, who's now in custody.
SIERRA SCHWARTZ: The Dzhokhar that I knew at the time was friendly, quiet but not in a - alarming way. He was just - you know, soft-spoken but very - you know, funny, very sweet, wouldn't harm a fly; someone that you would want to talk to.
This is WEEKEND EDITION from NPR News. I'm Scott Simon. Isn't it nice to be able to say time for sports?
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SIMON: The country was focused on tragedy and mayhem this week, but sports abides, including some remarkable tributes to Boston. And the NBA playoffs begin today and run until, I don't know, I think December. Can anyone beat the Heat? For now we're joined by Howard Bryant of ESPN.com and ESPN the Magazine. Howard, thanks so much for being with us.
Tracing the Tsarnaev family roots back to Russia is going to require cooperation between Washington, D.C., and Moscow and of course, as we just heard, this comes at a frosty time in relations between the two countries. NPR's diplomatic correspondent Michele Kelemen joins us. Thanks for being with us.
MICHELE KELEMEN, BYLINE: Thanks, Scott.
SIMON: And first, any signs of cooperation so far?
Soon after federal authorities disclosed that the suspects in the Boston Marathon bombings were Muslims of Chechen descent, many American Muslims began bracing for a backlash. NPR's Jennifer Ludden has more.
How do you write something like Partita for 8 Voices, the a cappella vocal piece that is this year's winner of the Pulitzer Prize for music?
"Very late at night," says the composer, Caroline Shaw, speaking with NPR's Scott Simon. "Sometimes it comes from having a sound in your head that you really want to hear, that you've never heard before, and struggling to make that sound happen in any way you can."