Click below for the fingerings that I use to play a jazz chord-melody arrangement of Hugh Martin and Ralph Blane's 1943 Christmas standard Have Yourself A Merry Little Christmas introduced by Judy Garland in the 1944 MGM musical "Meet Me In St. Louis." I play it in the key of G not the original key of C. The song is played slowly in 4/4 time. The "A" sections are built on repeated "I-vi-ii-V." Standard Progressions.