According to  "Smithsonian Magazine", Elvis Presley, The Beatles, and Michael Jackson, rank as the top 3 most "Recognizable" faces of popular music of the whole world... in the 20th century. The criteria is based on, television and movie archival footage from around the world, news articles from newspapers and magazines, and personal appearances.  What makes it more amazing for #1 Elvis Presley, is that, except for a  few shows in Vancouver, Canada back in 1957, Elvis never toured outside of the U.S. !!!