Presenting the first track from their in-progress album PTX: Vol. 2, a cappella group Pentatonix tackles Macklemore & Ryan Lewis' ‘Can't Hold Us.' While lacking in the party ships, crowd-surfing, and patriotic camels of the original, the cover keeps the toe-tapping high-energy beat thanks in no small part to Kevin “K.O.” Olusola's beatboxing skills. You can watch both videos – Pentatonix's cover and Macklemore's original – AFTER THE JUMP…
