- Sep 2 Ian Mitchell, Irish rocker (Bay City Rollers), dies at 62
- Sep 4 Gary Peacock, American jazz bassist (Keith Jarrett Trio), dies at 85 [1]
- Sep 8 Simeon Coxe, American songwriter, singer and psychedelic synthesizer player (Silver Apples), dies of pulmonary fibrosis at 82 [1]
- Sep 9 Ronald Bell, American rock saxophonist and composer (Kool & The Gang), dies at 68
- Sep 11 (Frederick) "Toots" Hibbert, Jamaican singer-songwriter (The Maytals - "Pressure Drop"), dies with COVID-19 symptoms at 77 [1]
- Sep 11 Charles Patrick, American do-wop singer and songwriter (The Monotones - "The Book of Love"). dies on his 82nd birthday
- Sep 12 Edna Wright, American pop singer (Honey Cone - "Want Ads"), dies of a heart attack while suffering from COPD at 75
- Sep 15 Caroline Kaart (neé Raitt), Scottish-Dutch alto singer, TV and radio presenter, dies at 88
- Sep 15 Jan Krenz, Polish conductor and composer, dies at 94 [1]
- Sep 19 Lee Kerslake, British drummer (Uriah Heep; Ozzy Osbourne), dies of prostate cancer at 73 [1]
- Sep 21 Jacques-Louis Monod, French pianist, conductor, and composer (Cantus Contra Cantum), dies at 93
- Sep 21 Tommy Devito, American rock baritone vocalist and guitarist (Four Seasons - "Sherry"), dies of COVID-19 at 93
- Sep 23 Juliette Gréco, French singer (Sous le ciel de Paris) and actress, dies at 93 [1]
- Sep 23 W. S. "Fluke" Holland, American rockabilly session and touring drummer (Sun Records; Carl Perkins; Johnny Cash), dies at 85
- Sep 25 S.P. Balasubrahmanyam, Telegu playback singer (The Jewel of Shiva), dies of COVID-19 at 74
- Sep 28 Frédéric Devreese, Belgian conductor, and composer of classical music (Gemini Suite; Valse Sacrée), and film scores (The Cruel Embrace), dies of cancer at 91
- Sep 29 (Francis) Rocco Prestia, American funk-rock bassist (Tower of Power),dies at 69
- Sep 29 Helen Reddy, Australian-American rock vocalist ("I Am Woman"; "You And Me Against The World"), dies at 78 [1]
- Sep 29 Isidora Žebeljan, Serbian classical, opera, and film composer, dies at 53
- Sep 29 Justin Connolly [D'Arcy-Dawson], British classical and electro-acoustic composer (Diaphony; The Garden of Forking Paths), dies at 87
- Sep 29 Mac Davis, American country music singer-songwriter ("Baby, Don't Get Hooked On Me"; "In The Ghetto"; "I Believe In Music") and actor (North Dallas Forty), dies following heart surgery at 78 [1]
Country Singers
Jazz Singers
Opera Singers
Pop Singers
Rappers
Rock Singers