Prepare to party like it's pretty much 1999 again.

From Sleater-Kinney to Blur, bands who flourished in the 20th century are coming out of rock retirement to go back to the future like it's nobody's business (except it's definitely a lot of record execs' business). And in this installment of Mandatory Music, we spotlight five new songs released this week from a handful of artists whose previous albums you probably still have on CD.

Live in the now and check out these five essential new tracks: