NEW YORK -- Calling Pharrell's current state "happy" might be an understatement.
The producer-rapper-singer's tune "Happy" is nominated for best original song at Sunday's Oscars. Days ahead, the upbeat anthem has climbed to No. 1 on the Billboard Hot 100 chart.
Pharrell says in an interview Wednesday he's "ever so grateful" and "it's pretty crazy."
The 40-year-old adds: "It's really awesome and I'm still shocked."
"Happy" is from the "Despicable Me 2" soundtrack and will appear on Pharrell's new album, "GIRL," out Monday.
The hitmaker says he's prepping for his performance Sunday, and he "just intends to have fun with it."
Pharrell also topped the Hot 100 chart as a featured act on Robin Thicke's "Blurred Lines," Snoop Dogg's "Drop It Like It's Hot" and Ludacris' "Money Maker."