from which movie is this?
"The Hunger Games"
The Hanging Tree (The Hunger Games song)
"The Hanging Tree" became the highest charting song from "The Hunger Games" franchise on the chart, 
when does katniss sing the hanging tree in the movie UNANSWERABLE
wiki:12011266
The Hanging Tree (The Hunger Games song) [SEP] Reception and promotion
streams) on Streaming Songs, charting at number two (200,000 downloads sold) on Digital Songs and received eight spins on U.S. radio. "The Hanging Tree" became the highest charting song from "The Hunger Games" franchise on the chart, surpassing "Eyes Open" by Taylor Swift, which peaked at number 19. Lawrence became one of 13 Academy Award-winning recipients to chart on the Hot 100; the last female Academy Award winner to achieve this feat was Cher with "Believe" (1998). The song peaked at number one in Austria, Germany and Hungary; it peaked in the top five in Australia. It was certified platinum by Music Canada (MC) and double platinum by the Recording Industry Association of America (RIAA).