Formed 26 years ago, Erasure helped pioneer the sound of electronica and dance music that is once again ruling today's pop charts. With a sense of both optimism and longing -- in terms of music and lyrics -- the duo of Andy Bell and Vince Clarke's patented style has been the soundtrack to coming out, or even just growing up, to many. The band will release its 14th studio album, Tomorrow's World, next month. Known for its elaborate stage shows, the band stops for two nights at the 9:30 Club next week to preview the sweet new material, as well as indulge its devoted fans with any number of indelible hits from its repertoire, including "A Little Respect," "Chains of Love," "Oh L'Amour," "Love To Hate You" and "Always." And the crowd lived in harmony, harmony, oh love. Erasure performs Tuesday, Sept. 6, and Wednesday, Sept. 7. Doors at 7 p.m. at Nightclub 9:30, 815 V St. NW. Tickets are $45. Call 202-265-0930 or visit 930.com.