Flo Rida breaks his own record for most weekly digital song downloads as "Right Round" debuts at No. 1 on Billboard's Hot Digital Songs chart with 636,000 units, according to Nielsen SoundScan.

The total smashes the mark he set with "Low" (467,000) in the January 12, 2008, issue, which took into account sales from that season's post-Christmas week. The tally for "Round" also surpasses the opening-week download record set just last week by "Crack a Bottle" from Eminem, 50 Cent & Dr. Dre (418,000).

On the heels of its record-breaking sum, "Round," which is based around Dead Or Alive's 1985 No. 1 Billboard Hot 100 hit "You Spin Me Round (Like a Record)," will move 58-1 on the Billboard Hot 100 on the chart to be posted tomorrow (Feb. 19) on Billboard.com.

The track will be Flo Rida's second to top that list, following "Low" which spent 10 consecutive weeks at No. 1. "Round" precedes Flo Rida's second Poe Boy/Atlantic album, "R.O.O.T.S.," due April 7.

Meanwhile, Atlantic Records labelmate T.I. is one of many artists to parlay a Grammy Awards performance into increased sales as his collaboration with Justin Timberlake, "Dead And Gone," will rise 9-2 on the Hot 100 with the chart's largest week-to-week digital download spike (up 118,000).

While Atlantic Records recently held the top two slots on the chart for six weeks this past fall with a pair of T.I. tracks, this is the first time two different artists from the label have occupied the No. 1 and No. 2 slots in 20 years. In the March 18, 1989, issue Debbie Gibson's "Lost In Your Eyes" led the list followed by Mike + The Mechanics "The Living Years."