Casiotone For the Painfully Alone, with Otouto, Polka Dot Dot Dot. Sunset Tavern, 5433 Ballard Ave. N.W., 784-4880. 9 p.m. $10. Earlier this summer, Owen Ashworth announced that he would be retiring his longtime stage project, Casiotone for the Painfully Alone. Since 1997, CFTPA has been producing witty, minimalist songs, hybrids of electronic beats, plinking keyboards, and wry, low-key vocals. For reasons only the gods of indie-cool can ascertain, it’s all stayed pretty much under the radar; with this final tour, Ashworth is celebrating what his website is (somewhat painfully) calling “13 years of obscurity.” He’s just abandoning this project, though, not music altogether – which is nice to hear, especially since his latest composition, the beat-heavy “Goodbye Parthenon,” is one of his craftiest, catchiest songs to date. ERIN K. THOMPSONRatatat, with Dom, Bobby Birdman. Showbox SoDo, 1700 First Ave. S., 628-3151. 8 p.m. $30. Though the vast majority of June release LP4 came out of the same recording sessions that spawned 2008’s LP3, electronica duo Ratatat didn’t put out the album until this year, opting instead to craft two songs for Kid Cudi. Even though most of LP4 is as old as LP3, the spastically seamless compositions on it are as good as, if not better than, those found on LP3. Whether or not the band meant to save the best for last or not is debatable, but if so, it was a smart move. LP4 gives the appearance that the band is progressing, rather than backsliding or stagnating. SARA BRICKNER