Mercies, the incredible duo of Josh Rheault and Sammy Dent, will be performing at Union Pool in Brooklyn on Aug. 31. Recently, they released their album, Three Thousand Days, which is composed of 10 tracks of intricate indie rock, recorded in a newly transformed barn in which Rheault and Dent were inspired by the sounds of nature. The band is sure to stun the audience in Brooklyn with the intense and creative melodies of this album. Also performing will be Ancient Sky and Dead Sands. Doors open at 8 p.m.; tickets are $8.