Sweden's jj returned yesterday (May 8) with the release of a new single, jj nº 4. The two-sided effort features previously leaked, swagged-up joint "Beautiful Life" and stripped-down ballad "Burn." The latter track is a marked turn for the genre-bouncing duo, who typically infuse their tunes with a thudding low end and (un)ironic lyrics. This is about as minimalist as it gets for jj, and it most certainly works. You can hear "Burn" below.