A concerto in 'C' for Philly's piano-playing feline phenom

Who can forget Nora, the rescued gray tabby cat from Philadelphia with a knack for tinkling the ivories.

Apparently Nora made an impression, not only on the millions of people who caught her act on YouTube, but also on a Lithuanian conductor who decided to write a concerto in her honor.

Mindaugas Piecaitis wrote "Catcerto" which premiered June 5 at the Klaipeda Concert Hall in Lithuania, The performance featured video of Nora on a giant screen behind the orchestra. (That's a long way from the mean streets of Cherry Hill, NJ, where her owners plucked her from obscurity at a shelter.)

When Nora's owners, the artists Burnell Yow! and piano teacher Betsy Alexander who live in Center City, posted the 42-second video on You Tube they did it for Alexander's piano students and few relatives. But you can't stop a viral craze on the Internet and Nora wound up as a finalist for the 2008 YouTube Awards, drawing 14 million viewers and rave reviews from the critics.

Now she's immortalized in music.