Dirty on Purpose are at once oddly familiar and distressingly hard to put a finger on. American Analog Set meets Modern English? Yo La Tengo meets Arab Strap? Or Belle & Sebastian meets Clan of Xymox (…I know, don’t ask)? Or is it just me? They are crisp and clean, their guitars and vocals soaring above the driving rhythms. So listen to “Mind Blindness.” If you like, then and only then download “Monument,” as it’s a miserly 80 kbps.