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Apple unveils a new sound. Alibaba hits a new high. And Nordstrom considers going private. Plus, investigative journalist Diana Henriques talks about her best-selling book turned HBO film, The Wizard of Lies. Thanks to Casper for supporting The Motley Fool. Save $50 on a mattress at www.casper.com/fool and use the promo code "fool".   Learn more about your ad choices. Visit megaphone.fm/adchoices