Philadelphia’s Curtis Institute of Music, arguably the nation’s top conservatory, has raised the $35 million it set as a goal in its latest fund drive several months ahead of schedule. The money will be distributed to several parts of the institution, but the bulk will go the the school’s endowment, which – at $127 million – is larger than that of all but a few major American orchestras, and is a huge boon for a school which does not charge tuition to its 161 students.