The Beatles are regarded as the foremost and most influential act of the rock era as well as the most commercially successful.
The Beatles . With members John Lennon , Paul McCartney , George Harrison and Ringo Starr , they became widely regarded as the foremost and most influential act of the rock era . In 2008 , the group topped Billboard magazine 's list of the all-time most successful `` Hot 100 '' artists ; , they hold the record for most number-one hits on the Hot 100 chart with twenty .