The track is a mash-up of two songs from the artists' respective Tony-Award-winning musicals: Hamilton's "The Story of Tonight" and Dear Evan Hansen's "You Will Be Found." Miranda wrote and starred in Hamilton, while Platt starred in Dear Evan Hansen, whose "Found" was written by Benj Pasek and Justin Paul.
A portion of all proceeds from "Found/Tonight" benefit the March for Our Lives initiative, and Miranda and Platt will perform the song at the March for Our Lives in Washington, D.C., on Saturday. The event, one of 800 marches that will take place that day, will stream live on Twitter, Facebook and YouTube.
Miranda is aiming for his second Digital Song Sales No. 1, following fellow charity single "Almost Like Praying," featuring Artists for Puerto Rico. Released in response to Hurricane Maria, the track debuted atop the chart dated Oct. 28, 2017. It also became Miranda's highest-peaking song (of three) on the Hot 100, debuting at its No. 20 peak that week.
Platt looks set to earn his first Digital Song Sales and Hot 100 entry. His sole prior Billboard charted title is also a Dear Evan Hansen composition: "Waving Through a Window," credited to Platt and the Original Broadway Cast of Dear Evan Hansen, hit No. 1 on the Dec. 9-dated Dance Club Songs chart.
Highlights of next week's Hot 100, which blends streaming, airplay and sales data, according to Nielsen Music, will post on Billboard.com on Monday (March 26), with all charts posting the following day (March 27).