The latest star to shoot out of YouTube knows the benefit of practice to make you purrfect. Nora the piano-playing puss has caused an internet-frenzy, with 2.5 million viewers across the globe logging on to see her antics. Nora looks cool as a cucumber as she wows her audience Her musical stylings probably won't impress true aficionados of classical music. Aficionados of cats, however, will want to watch her over and over again.