Not least considering the sheer amount of high-profile figures who dominated grunge’s heyday in the early 1990s, it may seem curious – that is on the surface – that P. David Ebersole opted to delve into the backstory of Hole’s relatively shy-and-retiring Patty Schemel in his 2011 documentary Hit So Hard. But it’s a thought that, sans facts, neglects not only the drummer’s vital involvement in one of the generation’s biggest bands, but the heady, tragic lives of those whose personal lives often eclipsed the music. In focusing on one of the scene’s more unassuming characters, Ebersole traces hugely engrossing narrative. Chronicling…