Rachel Platten’s “Fight Song” has been used by corporations, sports teams and at least one 7-year-old cancer patient to inspire all kinds of emotional uplift.

The Piano Guys, a group that performs covers, played “Fight Song” at one of the numerous inaugural balls in D.C. Friday night. Rachel Platten, ...

[Fight Song,” by Rachel Platten] Rosin: This is Radio Atlantic.I’m Hanna Rosin. Every four years, the music world and the political world interact, and weird things happen.

AFTER “FIGHT SONG,” Platten’s label, Columbia, wanted her to put out music as quickly as possible to build on the enthusiasm. Platten released the album Waves in 2017 with a lead single ...