All the songs awarded with the Oscar for the better song since this award was established in 1934, the year in which "The Continental" won the film "The Merry Divorcee."
List of Oscar winners for best song:
1934 - "The Continental" from "The Merry Divorcee"
1935 - "Lullaby of Broadway" from "Gold Diggers of 1935"
1936 - "The Way You Look Tonight" from "On the Wings of Dance"
1937 - "Sweet Leilani" from "Waikiki Wedding"
1938 - "Thanks for the Memory" from "The Big Broadcast of 1938"
1939 - "Over the Rainbow" from "The Wizard of Oz"
1940 - "When You Wish upon a Star" from "Pinocchio"
https://www.youtube.com/watch?v=pguMUFyJ3_U
1941 - "The Last Time I Saw Paris" from "Lady Be Good"
https://www.youtube.com/watch?v=s2c9cVfIov4
1942 - "White Christmas" from "Holiday Inn"
1943 - "You'll Never Know" from "Hello, Frisco, Hello"
1944 - "Swinging on a Star" from "Following my path"
1945 - "It Might as Well Be Spring" from "State Fair"
https://www.youtube.com/watch?v=7bUNh1gTBp0
1946 - "On the Atchison, Topeka and the Santa Fe" from "The Harvey Girls"
1947 - "Zip-a-Dee-Doo-Dah" from "Song of the South"
1948 - "Buttons and Bows" from "Pale Face"
1949 - "Baby, It's Cold Outside" from "Neptune's Daughter"
1950 - "Mona Lisa" from "Captain Carey"
1951 - "In the Cool, Cool, Cool of the Evening" from "Here came the groom"
1952 - "The Ballad of High Noon (Don't forsake me)" from "High Noon"
1953 - "Secret Love" from "Calamity Jane"
1954 - "Three Coins in a Fountain" from "We believe in love"
1955 - "Love Is a Many-splendored Thing" from "Farewell Hill"
1956 - "Whatever Will Be, Will Be (Que sera, sera)" from "The Man Who Knew Too Much"
1957 - "All the Way" from "The Mask of Pain"
1958 - "Gigi" from "Gigi"
1959 - "High Hopes" from "Millionaire of Illusions"
1960 - "Never on Sunday" from "Never on Sunday"
1961 - "Moon River" from "Breakfast at Diamonds"
1962 - "Days of Wine and Roses" from "Days of Wine and Roses"
1963 - "Call Me Irresponsible" from "Daddy's Delicate State"
1964 - "Chim-Chim-Cheree" from "Mary Poppins"
https://www.youtube.com/watch?v=xyzrKJAu9Rk
1965 - "The Shadow of Your Smile" from "The Sandpiper"
1966 - "Born Free" from "Nacida libre"
1967 - "Talk to the Animals" from "Doctor Dolittle"
1968 - "The Windmills of Your Mind" from "The Thomas Crown Case"
1969 - "Raindrops Keep Fallin 'on My Head" from "Two Men and One Destiny"
1970 - "For All We Know" from "Lovers and Other Strangers"
https://www.youtube.com/watch?v=nmFiCf_yBnA
1971 - "Theme from Shaft" by "Shaft"
1972 - "The Morning After" from "The Adventure of Poseidon"
1973 - "The Way We Were" from "As We Were"
1974 - "We May Never Love like This Again" from "The Burning Colossus"
1975 - "I'm Easy" from "Nashville"
1976 - "Evergreen" from "A Star Is Born"
1977 - "You Light up My Life" from "You Light up My Life"
1978 - "Last Dance" from "Thank God it's Friday"
1979 - "It Goes Like It Goes" by "Norma Rae"
1980 - "Fame" from "Fame"
1981 - "Arthur's Theme (Best That You Can Do)" from "Arthur, the Golden Bachelor"
1982 - "Up Where We Belong" from "Officer and Gentleman"
1983 - «Flashdance… What a Feeling» from «Flashdance»
1984 - "I Just Called to Say I Love You" from "The Woman in Red"
1985 - "Say You, Say Me" from "White Nights"
1986 - "Take My Breath Away" from "Top Gun"
1987 - "(I've Had) The Time of My Life" from "Dirty Dancing"
1988 - "Let the River Run" from "Muter's Arms"
1989 - "Under the Sea" from "La serenity"
1990 - "Sooner or Later" from "Dick Tracy"
1991 - "Beauty and the Beast" from "Beauty and the Beast"
1992 - "A Whole New World" from "Aladdin"
1993 - "Streets of Philadelphia" from "Philadelphia"
1994 - "Can You Feel the Love Tonight" from "The Lion King"
1995 - "Colors of the Wind" from "Pocahontas"
1996 - "You Must Love Me" from "Evita"
1997 - "My Heart Will Go on" from "Titanic"
1998 - "When You Believe" from "The Prince of Egypt"
1999 - "You'll Be in My Heart" from "Tarzan"
2000 - "Things Have Changed" from "Wonder Boys"
2001 - «If I Didn't Have You» by «Monstruos SA»
2002 - «Lose Yourself» from «8 miles»
https://www.youtube.com/watch?v=bmXumtgwtak
2003 - "Into the West" from "The Lord of the Rings: The Return of the King"
2004 - "Across the river" from "Motorcycle Diaries"
2005 - "It's Hard out Here for a Pimp?" from "Hustle and Flow"
2006 - "I Need to Wake Up" from "An Inconvenient Truth"
2007 - «Falling slowly» from «Once»
2008 - "Jai Ho" from "Slumdog Millionaire"
2009 - "The weary kind" from "Crazy Heart"
2010 - "We Belong Together" from "Toy Story 3"
https://www.youtube.com/watch?v=Bw7ZjO-Nf5Q
2011 - "Man or Muppet" from "The Muppets"
2012 - "Skyfall" from "Skyfall"
2013 - «Let it Go» from «Frozen»