Order tickets through Goldstar.com (I'm a member and previously attended a Learn About Wine sake tasting through the site); I first heard about the tasting from Drink:Eat: Play Los Angeles--that group is organizing a 70-sake tasting September 26 at Gonpachi.
Sunday is a five sake tasting paired with dishes from catering company Heirloom LA at Silver Lake Wine. Two are from Kasumi Tsuru, one is an extra dry Kimoto, the other a namazake, which is unpasteurized draft sake--super fresh, usually very light and drinkable and must always be kept cold. From Niigata, there will be a Ichishima Honojozo (70% or less of the rice grain remains). Ichishima Brewery has been around since the 1700s so expect a very well balanced sake.