Castles is a three-track collaborative EP by Lil Peep and Lil Tracy, first released on July 4, 2016. It was recorded in late June 2016, just weeks after the two met in person and began living together in Los Angeles. Seven months later, on February 6, 2017, they released a five-track sequel, Castles II, also recorded in L.A. These EPs feature some of their most popular songs, including "White Wine" and "Witchblades."