"Toxic is just one of the baddest tracks ever! I remember the first time we listened to Baby One More Time. We were like, 'Oh, let's go play Britney Spears on the piano!' And we all come over drinking, and after a couple of minutes, we're like, 'This Britney Spears is a lot harder than we thought!' Matchbox Twenty rocker Rob Thomas is a big fan of the pop star.