Latin singer Shakira is revealing more details about her upcoming duet with her fellow judge on 'The Voice,' Blake Shelton.

“That was awesome,” the songstress tells Ryan Seacrest. “We just [recorded it] -- it’s a country, folk song … I kind of directed him. I wrote the song with some people from Nashville and I sent it to him and I was super-nervous. I was like, ‘Oh my god. What’s he going to think?’ And he loved it. He said, ‘Wow! This is exactly what you were talking about. I love this song.’”

The two met last year, when Shakira and Usher replaced Christina Aguilera and Cee Lo Green on Season 4 of the hit TV talent show. Both Shakira and Usher will also return for Season 6, which will premiere next week, joining Adam Levine and Shelton in the famous red swivel chairs.

“I think the chemistry is better than ever,” she maintains. “I’m having fun … [although] Adam [gets on my nerves the most] because he’s so competitive! And Usher is like Switzerland, he’s a little more neutral. And Blake can get on my nerves too, but he’s too funny.”

Shakira's song with the country star will appear on her upcoming eponymous album, which will be released on March 25.

Season 6 of 'The Voice' debuts on Feb. 24 on NBC.