aty Perry's "E.T.," featuring Kanye West, flies back to the top spot on the Billboard Hot 100 to be released tomorrow (April 28) on Billboard.com, while a song from the album atop the Billboard 200 roars to the Hot 100's runner-up rank, both titles fueled by exposure last week on Fox's "American Idol."

"E.T." (2-1) rebounds for a fourth week at No. 1 the Hot 100 courtesy of twin 2-1 advances on Digital Songs, where it reigns for a fifth non-consecutive frame, and Radio Songs. After Perry and West performed the song (in a pre-taped segment) on last Thursday's (April 21) "Idol" results episode, the song shifted 344,000 downloads (up 21%) in the April 18-24 tracking week, according to Nielsen SoundScan, marking a new weekly high for the song (besting its sum of 327,000 three weeks ago).

Up 9% to 133 million audience impressions, according to Nielsen BDS, "E.T." logs its first week at No. 1 on Radio Songs, becoming the fourth leader on the list from Perry's album "Teenage Dream," following "California Gurls," featuring Snoop Dogg, the title cut and "Firework." The set is just the second, after Usher's "Confessions" in 2004, to yield four No. 1s in the airplay survey's 20-year history.

As Adele's "21" returns to the Billboard 200's summit, the album's lead single, "Rolling in the Deep," charges 6-2 on the Hot 100 as the chart's Digital Gainer. The song lifts 5-2 on Digital Songs with 298,000 downloads sold (up 99%). "Idol" contestant Haley Reinhart performed a faithful version of the song on last Wednesday's episode. "Deep" concurrently darts 19-12 on Radio Songs (62 million in audience, up 18%).

Holding at No. 3, the Black Eyed Peas' "Just Can't Get Enough" scores the Hot 100's Airplay Gainer award. The song bounds 8-4 on Radio Songs (85 million, up 26%) and maintains its No. 3 ranking on Digital Songs (207,000, up 20%).