Beatles , who inked contracts for more than 2,000 of musicians , dies at age 77 . Klein 's company , Klein , built up catalog of copyrights to dozens songs . Known for his tough negotiating style , many blame Klein for the Allen Klein ' break-up .
Allen Klein , who inked contracts for dozens of musicians , dies at age 77 . Klein 's company , ABKCO , built up catalog of copyrights to more than 2,000 songs . Known for his tough negotiating style , many blame Klein for the Beatles ' break-up .