Bibliografíahttp://www.todominio.com/losdiezmas/musica/los-10-mejores-cantantes-del-siglo.phphttp://images.google.com.mx/images?hl=es&source=hp&q=paul+mccartney&um=1&ie=UTF-8&sa=N&tab=wihttp://www.freddie-mercury.com/mercury.jpghttp://rhonabennett.files.wordpress.com/2009/09/nat_king_cole-1.jpghttp://www.bbc.co.uk/radio4/factual/media/Neil_Tennant.jpghttp://frecuenciax.files.wordpress.com/2009/10/ozzy_osbourne.jpghttp://www.aimme.es/documentos/difusion/sourcepyme/paginas/peru.blogalaxia20080118_files/1.jpghttp://z.about.com/d/classicrock/1/5/G/5/collins_3.jpghttp://www.biografiasyvidas.com/biografia/r/fotos/roberto_carlos_2.jpghttp://www.bbc.co.uk/theoneandonly/system/gallery/before_image/10/large/Frank_Sinatra.jpg