Watch Lana Del Rey, Courtney Love, Céline Dion, and More Perform at Leonard Cohen's Memorial Concert

At yesterday's tribute concert to Leonard Cohen, which took place at the Bell Centre in Montreal, star cameos abounded. According to reports, there were, among so much else, multiple turns from Sting and Elvis Costello, Courtney Love singing I'm Your Man's prescient "Everybody Knows," and a video tribute featuring a "Tower of Song" performance by Willie…