Almanac: December 20, 2015
- 1930 - Pat Hare (Howlin' Wolf, Muddy Waters) (d. 1980)
- 1939 - Courtney Johnson (New Grass Revival) (76)
- 1939 - Kim Weston (76)
- 1941 - Michael Hurley (74)
- 1944 - Bobby Colomby (Blood, Sweat & Tears) (71)
- 1945 - Peter Criss (Kiss) (70)
- 1948 - Alan Parsons (67)
- 1948 - Stevie Wright (Easybeats) (67)
- 1956 - Anita Ward (59)
- 1956 - Guy Babylon (Elton John band) (d. 2009)
- 1957 - Billy Bragg (58)
- 1957 - Mike Watt (Minutemen, Firehose, Stooges) (58)
- 1966 - Chris Robinson (Black Crowes) (49)
- 1975 - Graham Hopkins (Swell Season, Therapy?) (40)
- 1980 - Chris Edwards (Kasabian) (35)
- 1982 - David Cook (33)
- 1990 - JoJo (born Joanna Levesque) (25)
- 1973 - Bobby Darin - Complications from heart surgery (37)
- 1982 - Don Law (producer) - Lung cancer (80)
- 1999 - Hank Snow (85)
- 2004 - Son Seals - Diabetes (62)
- 2012 - Jimmy McCracklin (91)
- 2013 - David Richards (producer) (57)
- 1950 - Lefty Frizzell debuted on the Grand Ole Opry.
- 1967 - Joan Baez was sentenced to 45 days in jail for her participation in an anti-war protest.
- 1967 - Ian Anderson and Glenn Cornick formed Jethro Tull.
- 1974 - Joe Walsh replaced Bernie Leadon in the Eagles.
- 1980 - Phil Taylor of Motorhead accidentally broke a bone in his neck at an after-party.
- 1983 - Johnny Cash went into the Betty Ford Center to head off addiction to pain killers from a recent hospitalization.
- 1986 - Randy Travis joined the Grand Ole Opry.
- 2000 - Barbra Streisand and Eddy Arnold received the National Medal of the Arts from President Clinton.
- 2001 - Tommy Lee of Motley Crue filed papers saying that his ex-wife Pamela Anderson was an unfit mother.
- 2005 - Sugarland lost original member Kristen Hall.
- 2006 - Matthew Fischer won a court decision that he should share in the profits from Procol Harum's A Whiter Shade of Pale. Fischer was the organist who wrote the famous rift in the song.
- 1998 - Russell Simmons and Kimora Lee
- 2006 - Eminem (Marshall Mathers) and Kim Mathers (2nd time the couple divorced)
- 2007 - Eddie Van Halen and Valerie Bertinelli
- 1968 - The Beatles' 1968 Christmas Record - Beatles
- 1969 - He Ain't Heavy (He's My Brother) - Hollies (single)
- 1962 - Andy Williams Show - Osmond Brothers (first appearance)