This is simply an announcement of the imminence of publication of this comprehensive key to the vast library of recorded music. 184 composers are represented-2000 works more than 5000 recordings. The arrangement is alphabetical under composers, with name of work, various recordings, key to each one. In addition there is included a short critique of each work. The first book of its kind by a record critic. Publishers plan to keep material up to date by issues of supplements and are backing this extensively with advertising in music field, posters and other sales aids for the trade.