"I ain't just rhyming," Issa Gold, one half of The Underachievers, says in "Chrysalis." "Keep up." He's rapping, which is much more difficult. Rapping requires him and his partner AK to choose a flow, or melody, for their lyrics; something they can use to parry the beat or run it down or surf. The duo puts the pedal to the metal here more often than not, exercising a slightly archaic style of MCing: deft, speedy, highbrow, tough to perform at the end of a set. Colloquially, rappity-raps.