On my commutes, I listen to nerdcore hip-hop almost exclusively now. (Click on the rap and music topic tags on the right to learn more.) By day I’m a software tester and my work requires concentration. So I pick music that’s chill – with no words if possible. Thanks to Pandora, I’ve discovered electronic tango: a mix of hip beats and traditional tango music. I highly recommend the Gotan Project station on Pandora for more.