Robert J. Gregg (born Robert Grego; April 30, 1936 – May 3, 2014) was an American musician who performed as a drummer and record producer. As a drum soloist and band leader he recorded one album and several singles, including one Top 40 single in the United States. But he is better known for his work as a drummer on several seminal 1960s songs, including Bob Dylan's "Like a Rolling Stone" and Simon and Garfunkel's "The Sound of Silence". He... [more on Wikipedia]