The pair evokes an era when hip-hop dinosaurs like the Beastie Boys and Run-DMC roamed the landscape, vocal rhythms were symmetrical, and rhymes occurred only at the ends of phrases. Simple beats and synth lines sit well with the lyrical flow and offer an occasional head-turning moment, like the driving disco beat of "Morning Edition" or a sudden flip from a sparse downtempo beat into a booty-moving electro groove in "I'll Be Frank." While hip-hop might trudge forward without these fellas, it will be better with them.