The Songza app lets music lovers build playlists for almost any mood or situation, from "Unwinding After a Long Day" to "Cooking" or "Eating Dinner." hide caption

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For Playlist Junkies, An App To Send You Down The Rabbit Hole

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A cyclist uses a fader to manipulate music, on Cogoo's Turntable Rider kit that blends DJ and BMX culture. NPR hide caption

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Jay-Z and Beyonce in 2003 and 2011, aging well. (L) Frank Micelotta, (R) Julio Cortez/(L0 Getty Images, (R) AP hide caption

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(L) Frank Micelotta, (R) Julio Cortez/(L0 Getty Images, (R) AP

With a combination of a violin and trumpet in hand, this street musician shouldn't have a problem competing for customers with others. celesteh/flickr hide caption

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