Stoner metal band Sleep released a new song today for the Adult Swim singles program. The new song, “Leagues Beneath,” is a heavy 16-plus minute epic from the band, a trudging, monolithic record that slowly builds and expands until it consumes you. The new track is the 59th entry into the Adult Swim singles program, which features a new song every week. Sleep just released their comeback album The Sciences last month (on 4/20 of course)after being away for two decades. Listen to the new song below.