There are a lot of videos of cute kids doing stuff on the Internet.  Here is another one.  This video is a couple of years old, but at the time, Penelope was two.

The two-year-old sings the Pearl Jam song Elderly Woman Behind the Counter in a Small Town from the band's VS album.

She does a pretty good job.  Actually, she enunciates some of the words better than Eddie Vedder.