Denver label Shoeboxx first appeared on our radar last month, when the growing outpost offered a sleek track from Colorado producer Real Cosby‘s EP for the imprint. Now, Shoeboxx is in the midst of prepping the Selfish People EP from Connecticut beatmaker Adam Yan, who operates as Eest Coast. Serving as the lead single to his forthcoming effort, Yan’s “Marbles” production is awash with warm, swelling chords, glistening arpeggios, and sugary melodic twists; in other words, it’s an appropriate summer jam. “Marbles” and a handful of other tunes from Eest Coast will see their official release when the producer’s Selfish People EP drops on September 2.