Duran Duran, Raphael Saadiq Rock the Classics at SXSW Stubb's Show
Ellie Goulding poses for a portrait backstage at the Fader Fort by Fiat during the 2011 SXSW Music Festival on March 18, 2011 in Austin, Texas.

Ellie tells Billboard that songwriting process was 'quite childlike and quite innocent.'

"Lights," the final single from Ellie Goulding's 2010 album of the same name, is still reaching new peaks on the U.S. Hot 100, but that hasn't stopped the U.K. singer-songwriter from moving on with another radio offering. "Anything Could Happen," the first single from forthcoming album "Halcyon," was unveiled online on Thursday (Aug. 9).

A rollicking dose of optimism, "Anything Could Happen" is buoyed by a wordless chorus composed of effervescent cooing over airy synths. "Baby, I'll give you everything you need… But I don't think I need you!" Goulding declares with a previously unheard soulfulness in her voice.

"There was no intention of, 'Let's make the first single,'" Goulding tells Billboard.com of "Anything Could Happen," which she created with producer Jim Elliot. "This was fun because Jim's a really experienced, clever producer, but he acts like a child, like me. We're both like little kids just wanting to create sounds, like 'Oh that sounds cool' and 'let's see what happens when we do this!' It's like child's play, and… that's how 'Anything Can Happen' started. It's quite childlike and quite innocent."

The 25-year-old revealed "Anything Could Happen" through a lyric video that comprises fan-submitted Instagram photos. The contest to be included in the clip was announced last week, when Goulding posted the lyrics to her new single in full.

"Halcyon" is due out on Oct. 9 in the U.S., but her single "Lights," which does not appear on the new full-length, might still reside in the Top 10 of the Hot 100 at that point. The song climbs from No. 5 to No. 2 on this week's chart, in its 33rd week on the tally.