Week of Jan. 24

This week's new entries include individual debuts from Chris Brown and Rihanna. The singers were romantically involved before breaking up early last year, and Brown was sentenced in August to five years probation and more than 1,400 hours in community service on charges of assaulting Rihanna. This week marks the first time since then that both artists have hits on my chart: Brown enters with "Crawl" at No. 38, while Rihanna's take on Bob Marley's "Redemption Song" (a benefit for Haiti relief efforts) comes in at No. 37, replacing her Top 20 hit "Russian Roulette."

In the Top 10, country singer Reba McEntire is going for a new personal best as "Consider Me Gone" moves 14-8. Her biggest hit on my charts came in 1992, when "The Greatest Man I Never Knew" peaked at No. 6. McEntire looks likely to top that if this week's chart move is any indication.

Although Rie Sinclair & Friends have been able to hold atop the chart for three weeks, that stay could well end if this week's strong move to No. 2 proves foreshadowing for Alicia Keys and Beyonce. Their duet, "Put It in a Love Song," jumps from No. 6. Each artist has been active on national charts in other duets: Keys, with Jay-Z on "Empire State of Mind," and Beyonce, with Lady GaGa on "Telephone." (Speaking of Lady GaGa, looks like she'll have to settle for a No. 2 peak with "Paparazzi" as it slides two notches to No. 4 this week.)