Pharrell Williams is 'Happy' atop the Hot 100 for a fifth week, as Idina Menzel's 'Let It Go' storms into top 10 [VIDEOS]

Springtime is a "Happy" time. Literally. For the fifth week in a row, Pharrell Williams' peppy hand-clappy tune is the No. 1 song in the United States.

According to Billboard, Pharrell's "Happy" reigns supreme over all other music in America, dominating hits by John Legend, Katy Perry and Lorde. For one month straight, "Happy" has been the most-played song on radio, and now it's become the second-most played track of all time (just below a Pharrell-featuring hit, "Blurred Lines"). Last week, "Happy" was heard by 219 people times across all radio formats, besting the previous second place holder Mariah Carey's "We Belong Together."

"Happy" also holds as the most-purchased song of the week, moving 370,000 digital downloads. Basically, this song is unstoppable. Expect it to hold at No. 1 for quite some time, much like Robin Thicke's "Blurred Lines."

Beneath the sunshine storm that is "Happy," John Legend's "All Of Me" climbed one spot the week, giving the R&B crooner his best week ever (yet again). "All Of Me" sold 224,000 digital downloads, reached 143 million listeners on radio and was streamed nearly 7 million times over the last week. It's not "Happy," but these numbers definitely ain't too shabby.

This means that Katy Perry's trappy "Dark Horse" (feat. Juicy J) fell out of the No. 2 spot it had grown do comfortable in, slipping down to No. 3 this week. Previously, "Dark Horse" topped the Billboard Hot 100 for four weeks. "Talk Dirty," the internationally catchy Jason Derulo hit follows Perry, sitting at No. 4 for a second week.

After creeping into the top 10 two weeks ago, the Frozen hit "Let It Go" stormed back into the top 10 of the Billboard Hot 100... this time at a cold No. 5. Much like the Frozen soundtrack, which had its best sales week ever, "Let It Go" benefitted from the DVD/Blu-Ray release of the family friendly animated film. The Idina Menzel track sold 167,000 copies and was streamed 7.5 million times over the last week.

Menzel's return to the top 10 knocked quite a few tracks down a peg, like Bastille's "Pompeii," Lorde's "Team" and OneRepublic's "Counting Stars," which now sit at Nos. 6 through 8 (in order).

Beyoncé and Jay Z's "Drunk In Love" also fell a bit down the chart, slipping from No. 8 to No. 10 as Aloe Blacc's "The Man" rises to No. 9.

This means a good hearty goodbye goes to SOKO's "We Might Be Dead By Tomorrow," which landed at No. 9 on the Hot 100 last week thanks to the viral "First Kiss" video.