By Emily Zemler Joni Mitchell was honored with the lifetime achievement award at the 2026 Juno Awards last night. During the ceremony, held at the TD Coliseum in Hamilton, Ontario, Mitchell made a rare public appearance to accept the award and to join Sarah McLachlan and Allison Russell as they performed a medley of her songs. McLachlan opened the performance with Mitchell’s 1971 song “A Case of You. Russell joined for a duet of “Both Sides Now.” The singers welcomed Mitchell to the stage for a rousing rendition of “Big Yellow Taxi,” which also included many of the other musicians present. Canadian prime minister Mark Carney was on hand to present Mitchell with her award. “Joni’s music didn’t just provide the soundtrack to our lives,” Carney noted.…