When Sydney's father, Aaron Foye -- a professional musician in Willie Nelson's band -- was entertaining Sydney at 8 months old she decided to rock out right alongside him to Jon Bon Jovi's "Dead or Alive."
Best of all? It was caught on tape. The YouTube video of their duet -- complete with some cute baby head banging -- became a viral hit.
On "The Early Show" Monday, the Foye Family told how they caught the moment of their now 2-year-old daughter on video.
Aaron told "Early Show" co-anchor Erica Hill, "She crawls over and she was just the right height to grab up on the guitar and start strumming it, and she rocked out. So, with he had to tape it."
Click on the video below to hear Sydney sing at 8 months old, and see her "freestyle" singing today on "The Early Show."