Pendulum

This somber cut finds FKA Twigs detailing a lover who doesn't take her seriously as she croons about being "so lonely trying to be yours."

The song title doesn't appear in the lyrics. However the production of Paul Epworth (Adele's 21, Coldplay's Ghost Stories) softly sways back and forth like a "pendulum."

Here's some pendulum history (from The Encyclopedia of Trivia): In 1656, Dutch inventor Christian Huygens, working independently, constructed the first pendulum clock. This allowed everyone from traders to farmers and military commanders to know precisely what the time was. Until 1670 clocks had short pendulums and were hung on the wall. Then William Clements invented the longer pendulum and the grandfather clock came into being.