“The alt-R&B singer/producer Boots seemingly came out of nowhere in 2013 to produce a series of blockbusters, working on the last two albums from Beyoncé and Run the Jewels. In the years since, he hasn’t been able to build on those gains in his solo work, suggesting he’s a musician who functions better behind the scenes. “Delete Delete,” a Run the Jewels collab from his new EP, #DARKDAZE, sounds li”