Warren Entner (born July 7, 1944 in Boston, Massachusetts) is an American singer, songwriter, organist and guitarist for the rock and roll band, The Grass Roots. He then became a manager for several successful heavy metal/rock groups.
An original member of The Grassroots, Entner is the voice on that rock group's first hit, 1967's "Let's Live for Today," that sings "1-2-3-4" right before each chorus. He later went on to become a successful manager in the music industry.