We’re talking, of course, about Pearl Jam frontman Eddie Vedder, currently out making the promotional rounds in support of his new solo album, the aptly titled ‘Ukulele Songs.’ Vedder — who Letterman says was “nice enough to actually give me a guitar, and it occupies a position of honor in my home” — plunked down on a stool for a solo performance of ‘Without You,’ offering silent tribute to the recently deceased Clarence Clemons by way of a simple inscription, reading ‘CLARENCE,’ on his ukulele.