Mountain View, Calif. - Google's (NASD: GOOG) YouTube has announced an online musical collaboration that will cull online auditions and create a "YouTube Symphony Orchestra," which will perform at New York's Carnegie Hall in April. Musicians can upload videos of themselves performing composer Tan Dun's "Internet Symphony No. 1 'Eroica'" and another standard piece. Winners will then be flown to New York for the live performance, while the audio from their audition videos will be edited together into a single mashed-up orchestral version of the work.