MySpace music venture lonely at the topMySpace Music, the joint venture between the social network and three big record-label groups, is struggling to find a CEO, according to The Deal. There's a long list of prospects who have turned the News Corp.-owned social network down: Ian Rogers, the former head of Yahoo Music; Jim Bankoff, formerly of AOL; Eric Garland, the highly quotable head of file-sharing research firm BigChampagne; and former Launch CEO Dave Goldberg, who now works at Benchmark Capital as an entrepreneur-in-residence and is married to Facebook COO Sheryl Sandberg, which makes the L.A. job geographically undesirable. But what's most amusing about MySpace's failed CEO search is the excuse MySpace is now giving for putting off a hire: The team is so close to delivering a product that hiring a boss now would just screw things up. Makes sense — but it raises the question, why hire a CEO at all?