Josh Groban penned this Latin flexed song with longtime collaborator Tawgs Salter and Canadian singer-songwriter Simon Wilcox. The lyrics and melody were formed on the day Groban participated in Life Below the Line, a campaign in which people subsist on $1.50 for a day in order to understand the levels of true poverty. "It was not fun," said the singer. "A can of beans was my food, half in the morning and half at night. Somehow a song came out of it. It's not necessarily the full message of the song. The vibe is, 'We're not helping ourselves until we're helping others.'"
Groban told Billboard magazine: "I rarely throw political messages and things like that into songs, but this is a song I felt was inspiring on the day and continues to be."
"Lean On" was originally sent by Major Lazer to both Rihanna and Nicki Minaj's camps as a slower reggae track. After both parties rejected the tune, Major Lazer recruited Danish singer MØ to supply vocals and recorded it themselves.