Formed in 2007, South Korea's Sultan of the Disco are a throwback to the golden age of funk, with a little modern synth magic mixed in. Their songs are often a melting pot of whirling strings and party-starting beats; soulful slow jams like “Countless Nights” show off vocalist Nahzam Sue's falsetto croon. The electrifying energy of the group's renowned live performances (featuring snappy costumes and dynamic dance moves) translates to their recordings, in the form of four-on-the-floor beats and sultry basslines.