Hamilton Leithauser and Rostam Batmanglij's new project will release their debut album on September 23. The pair, who go by Hamilton Leithauser + Rostam, already shared "1000 Times" and have now released their second song "In A Black Out." Both tracks will appear on I Had A Dream That You Were Mine, released next month via Glassnote. Former Dirty Projectors member Angel Deradoorian will guest on the album.