Fortunately for its boisterous patrons, Brandy's Piano Bar on the Upper East Side stays open late. Hidden away on an unsuspecting street, this popular piano bar is one part sing-along, two parts lounge, and all around a great time. Upon arrival, expect to get pulled in by the staff to participate in a tune or 5, as Brandy's is definitely not a spectator sport. Be aware that unlike others on this list, Brandy's inflicts a two-drink minimum, per person per set, so be prepared to open a tab if you plan on staying. Happy hour starts at 4PM, though music won't get going until 9:30.