Sue Thompson had the original version in 1961.
Norman Connors - Valentine
Loulie Jean Norman sang the wordless vocal which accompanies the theme of the original Star Trek.
Norman Connors
Originally Norman Greenbaum but it was covered by 16 singers/bands that I know of.
Norman Greenbaum
Tom Jones sang the song.
Jay Sean sang the song 2012.
Disturbed sang that song
He sang the song "trouble" .
Carly Simon sang this beautiful song.
Faron Dawe sang the song 'Be Your Friend'