Betty Who’s debut single from her debut EP, The Movement.

It gained popularity after Spencer Stout posted a video of him proposing to his boyfriend with a flash mob dance routine at a Home Depot in Salt Lake City:
https://www.youtube.com/watch?v=l4HpWQmEXrM

Official music video here:
https://www.youtube.com/watch?v=gTVFQHuIg2I