Jim Bilger's knowledge of Grateful Dead lore runs deep.  So, it is no surprise that he has gathered outstanding musicians around him to create a Dead cover band that is mindful about the Grateful Dead's roots when performing.  Trouble Ahead has only been around for about 6 years, but they know their Grateful Dead music and pride themselves on their improvisational skills.  Check out their show at the Acorn Theater in Three Oaks on August 4.