Sia plays more games with anonymity and romantic entanglement as featured vocalist on disco legend Giorgio Moroder's ravishing new track, "Dèjá Vu" (RCA), the video for which is premiering now on Vevo. The song just entered Spotify's U.S. Viral Top 10.

If we may editorialize, Sia and Giorgio are a dream team, and this is the big, lush dancefloor jam we've been waiting for since Donna Summer ascended to that Great Disco Ball in the Sky. Moroder's full length, also called Dèjá Vu, is due 6/16.

For more Vevo premieres, go here.