Fri. preview: Ringo Starr interviewed for "CTM"

(CBS News) Fifty years ago this summer drummer Ringo Starr joined the Beatles.

Friday, the music icon sits down with Jeff Glor. You'll hear all about what he's up to these days - including creating pop art using computer paint programs and joining the Twitter "revolution."

Pictures: Beatles through the years

Be sure to tune in Friday for all that and more on "CTM" 7-9 a.m. ET.