Rapper Eminem has become the first artist in almost 50 years to score at least four hits in the U.S. top 20 as a lead artist. The star's new duet with Rihanna, The Monster, debuted at three on the Billboard Hot 100 countdown on Wednesday (06Nov13), ahead of three other top 20 hits from his The Marshall Mathers LP 2, making him the first act since the Beatles in 1964 to land the feat. Berzerk, Survival and Rap God placed at numbers 15, 16 and 17, respectively on the new chart. According to Billboard.com, the last time that happened was in April, 1964, when the Fab Four charted with landed six songs in the top 20 for two successive weeks. 50 Cent, T-Pain, Lil Wayne and Ludacris have also landed four top 20 hits in the same week - but they were features artists on some of the tunes.