William E. Williams, also known as El Da Sensei is an American rapper from Newark, New Jersey.
During the 1990s he was a member of the hip hop duo, Artifacts.
Since then he has released several solo albums.
[1] In 2015, at The 14th Annual Independent Music Awards, "The Immortals Project Featuring El Da Sensei" won the award in the "Rap/Hip-Hop - Song" category for "On the Rise".