The biggest U.S. music service on the Web in December was Vevo , a new entrant which is a joint venture between Google, Universal Music Group, and Sony Music. Dubbed the "Hulu of music videos," Vevo attracted 35.4 million unique visitors in December, 2009, putting it above the 33.1 million visitors who went to MySpace Music, according to estimates put out today by comScore. Considering that Vevo only l aunched on December 8 , that is a pretty good showing. A closer look at the numbers shows, that nearly all of that audience came from YouTube, which hosts a Vevo channel . Of the 35.4 million visitors which comScore counts for Vevo, 32.6 million (or 92 percent) are attributed to YouTube. In one fell blow, YouTube has helped to push MySpace Music from the No. 1 spot.