Who is a songwriter and musician as well as lead singer, Minoru Niihara or Robert Plant?
Robert Plant Robert Anthony Plant, {'1': ", '2': ", '3': ", '4': "} (born 20 August 1948) is an English singer, songwriter, and musician, best known as the lead singer and lyricist of the rock band Led Zeppelin.
Rob Grill Robert Frank Grill (November 30, 1943 – July 11, 2011) was an American lead singer, songwriter and bass guitarist, best known as a member of the rock and roll group The Grass Roots.