Stars, with Dead Child Star. Triple Door, 216 Union St., 838-4333. 7:30 p.m. Sold out. While it might be a tad blasphemous to proffer that an offshoot of Broken Social Scene contains a voice that should be heard more frequently than others (an inherently capitalist suggestion), there are plenty of Stars fans (me among them) who feel as though Torquil Campbell should play Oates to Amy Millan’s Hall, rather than Simon to her Garfunkel. The Five Ghosts is a compromise of sorts, with Campbell as composer and background vocalist, yielding the vocal fore to Millan’s breathy lead, and finally answering the question of what an Amy Millan solo album would sound like if Stars were her backing band. For their two-night run at the Triple Door, Stars will be playing the new Ghosts in its entirety during the first set, as well as whatever songs visitors to their website, youarestars.com, vote for most. Pairing self-indulgence with a give-’em-what-they-want ethos: Another happy medium. MIKE SEELYQuadron, with SunTzu Sound. Nectar, 412 N. 36th St., 632-2020. 8 p.m. $8. If you like Little Dragon, you’ll love Quadron, a Danish duo whose Plug Research debut dropped in March. Vocalist Coco can sound every ounce the slowdance-floor diva, like on the saxophone-smooth “Simili Life,” or she can channel Diana Ross while bandmate Robin turns old-school fingersnaps into echoed punctuations. Theirs is a smorgasbord of new treats made with throwback ingredients, updated technology, and lots of obvious love. They’ll play live on KEXP today at noon; stream their set and get ready to go. RACHEL SHIMP