"I just wanted to do some duets with some artists I really liked and some voices I like," Jewel explains. "Kelly was amazing. She was a hoot to have in the studio. She had done 'Foolish Games' in several talent shows prior to 'American Idol,' so she really knew it. I'm such a fan of her voice and love what she added to the song. She was so effortless on it. It's neat to hear it in her new light."
Jewel begins a 14-date tour to promote "Greatest Hits" on March 7 in Englewood, N.J. As for a next album, Jewel -- who's also been writing "quite a bit of prose" she hopes to publish soon (oh, hell) -- has a few concepts to choose from.
"I have a lot of albums in mind, and I'm not sure which will be first," she says. "I have a country album written. I'd really like to do a follow-up to 'Pieces of You.' I'd love to do a standards record; I grew up loving Cole Porter, and that's what got me into songwriting, so I've written a few like that. I don't know how much stomach I have for another big release with lots of promotion, so we'll have to see which way I decide to go."