One of the earliest known Eddie Vedder demo tapes has popped up online.

Antiquiet says it "recently came into possession of a direct copy of a tape that Vedder dubbed for a co-worker at his old job at San Diego Petroleum, somewhere in range of late 1989 or early 1990."

The 13 tracks include a couple of Vedder originals never heard before, better-sounding versions of songs  on previous demos (including Pearl Jam's "Better Man"), a cover of Sam Cooke's "A Wonderful World" and a goofy version of "Something Inside So Strong," a track made famous by country singer Kenny Rogers.

The entire demo can be downloaded at Antiquiet.