Chris Cornell (Soundgarden) was the musical guest on last night’s (April 19) episode of “The Tonight Show Starring Jimmy Fallon.” He played “The Promise,” which is a track he wrote for the film of the same name. That movie will hit theaters on tomorrow (April 21). Head to nbc.com to watch Cornell’s performance.

Chris Cornell (Soundgarden) will be the musical guest on tonight’s (April 19) episode of “The Tonight Show Starring Jimmy Fallon.” He will be playing “The Promise,” which he wrote for the film of the same name. That movie will hit theaters on Friday (April 21). View this post on Instagram A post shared by Chris…