In music, as in politics, yesterday's revolutionary is today's conservative. Listeners' ears have become accustomed to hearing once scandalous sounds in the backgrounds of film, radio and TV productions, and the mellowing years caused many of the composers themselves to compose less aggressively. Today the record industry—perhaps the most conservative part of the generally conservative music business—seems to have decided that 20th century music is here to stay.
Last week the weekly trade magazine The Billboard front-paged some corroborating statistics. Three major labels, Columbia, Mercury and MGM, devoted the largest part of their...