One Day at a Time Genre Sitcom Created by Whitney Blake Allan Manings Developed by Norman Lear Directed by Norman Campbell Herbert Kenwith Sandy Kenyon Howard Morris Noam Pitlik Alan Rafkin Don Richardson Tony Singletary Starring Bonnie Franklin Mackenzie Phillips Richard Masur Valerie Bertinelli Pat Harrington Mary Louise Wilson Michael Lembeck Ron Rifkin Glenn Scarpelli Boyd Gaines Shelley Fabares Nanette Fabray Howard Hesseman Theme music composer Jeff Barry Nancy Barry Opening theme "This is It '' performed by Polly Cutter Ending theme "This is It '' (instrumental) Composer (s) Jeff Barry Country of origin United States Original language (s) English No. of seasons 9 No. of episodes 209 (list of episodes) Production Executive producer (s) Dick Bensfield Jack Elinson Perry Grant Mort Lachman Norman Lear Alan Rafkin Producer (s) Dick Bensfield Patricia Fass Palmer Perry Grant Katherine Green Allan Manings Bud Wiser Camera setup Multi-camera setup, videotape Running time 24 minutes Production company (s) T.A.T. Communications Company (1975 -- 82) Embassy Television (1982 -- 84) Distributor T.A.T. Communications Co. (1980 -- 82) Embassy Telecommunications (1982 -- 86) Embassy Communications (1986 -- 88) Columbia Pictures Television (1988 -- 95) Columbia TriStar Television (1995 - 2002) Sony Pictures Television (2002 - present) Release Original network CBS Audio format Monaural Original release December 16, 1975 (1975 - 12 - 16) -- May 28, 1984 (1984 - 05 - 28)
who sang the one day at a time theme song
Polly Cutter