Up until a few weeks ago, I was not very familiar with Umphrey’s McGee. I knew they were an “up-and-coming” band who occasionally showcased twinges of rock, jazz improvisation, heavy metal, and rap (all of this without actually hearing a single one of their songs). After viewing their first live DVD release, “Live From the Lake Coast,” I realized that Umphrey’s McGee is the real deal. They are a powerful, poignant, and idiosyncratic group of musicians who aren’t afraid to groove.