When I first heard Polite Sleeper, I thought their folky guitar sound was a total rip off of some Indigo Girls song, but they quickly changed my mind once the rest of the band joined in. These indie rockers from Brooklyn have a sweet acoustic guitar feel mixed with ferocious drumming and a small hint of keyboards, making their music awkward, but pleasant. They will be playing Union Hall in Brooklyn on Sept. 24 for the Lake Effect release show. politesleeper.com.