See this film: 8 Mile [with talk on freestyle rapping] at the Coolidge

As anyone who's had a couple of drinks and tried to do it can testify, freestyle rapping isn't as easy as it looks. Turns out that the process involves some unique brain functioning, or so Charles Limb, MD tells us, and he's got the MRIs to prove it. He's a hearing specialist, a surgeon at Johns Hopkins, and a lifelong musician. At this session of Science on Screen he will explain what's really going on in Curtis Hanson's 8 Mile (2002), the gritty dramatization of rapper Eminem's origins. Maybe Dr. Limb can also explain what happened to Slim Shady's career since that movie came out. See it at the Coolidge Corner Theatre, 290 Harvard Street, Brookline | Monday, April 16 @ 7 pm | $9; $7 students, seniors | 617.734.2501 or coolidge.org.