In my eyes there aren’t many rock band reunions that seem motivated by something other than crass cash-ins or realizations that the individual parts of a group aren’t as successful as the whole. Yes, I’m incredibly cynical about the whole business. Still, sometimes a reupped band can transcend all of that noise and end up making surprisingly listenable music. Tonight the Bangles, who originally formed in Los Angeles three decades ago, play the House of Blues, and while I wouldn’t call their new album Sweetheart of the Sun (Model Music) a work of genius, it finds the band reclaiming many of the things that made me a big fan of their earliest music—their eponymous 1982 five-song debut for I.R.S. and All Over the Place (Columbia, 1984).