Danish a cappella group Local Vocal have brilliantly mixed songs from 90s pop songs like Haddaway’s “What Is Love” and Ace of Base’s “All That She Wants” with club hits of yore like “Scatman” and La Bouche’s “Be My Lover.” Even cooler? Each of the 20 members of the singing group recorded and filmed their parts individually for an visual experience like that of a Brady Bunch intro times ttwo — but better.