When Renée Zellweger asked me to duet with her on “Have Yourself a Merry Little Christmas” in the new Judy Garland biopic she is starring in, she joked that she had already been singing along with me for years, “especially on Laurel Canyon with the window down.” And I could make that same quip about Garland, who has been a constant force in my life. The Wizard of Oz was one of the pyramids of culture that I gazed at as a small child. I love these songs and have chosen them because they capture a little bit of Garland for me.

Rufus Wainwright is an American-Canadian singer. Judy hits theaters this weekend