Summerstage Preview at Highline Ballroom (01/09/12) There’s a Summerstage Preview show tonight at The Highline Ballroom with Shuggie Otis, People Get Ready, Ofei, Joshua Nelson, and DJ Kool Herc (Buy Tickets). If the past is any indication, that means one (or more) of these artists will be appearing druing the 2013 Summerstage season. (Last year’s…