'Different Drum' was written by Monkee Mike Nesmith who pitched this song for the show but producers of the Monkees' TV show turned down the song. However, Linda Ronstadt transformed "A Different Drum" into her breakout moment. Her version with the Stone Poneys rose to the Top 20 in 1967. The Monkees never recorded their own take, though Nesmith made a belated solo pass in 1972.
I had a lifelong crush on her before I found my true love. Apparently she still hasn't found hers. Her Parkinson's diagnosis has been re-diagnosed to progressive supranuclear palsy (which is commonly misdiagnosed as Parkinson's). In either case, sadly, it ended her singing career. Never-the-less, love her still and the world is better for her.