Although OTRCAT.com does not have recordings of every series listed below, the following is
quick reference guide to old time radio show series, theme music title, and composer (when available).

• R.K.O. Radio Hour, The
  Theme: Voice of R.K.O., The
  Tom Kennedy
  
• R.K.O. Radio Theater, The [with host William Hanley]
  Theme: Voice of R.K.O., The
  Tom Kennedy
  
• Radio Auction --
  see "Auction Gallery"
  
  Radio City Playhouse
  Theme: Shangri-La
  Robert Maxwell (m); Matty Malneck (m); Carl Sigman (w)
  
• Radio Hall of Fame, The
  Theme: World Outside, The (Theme from "The Warsaw Concerto", from the 1941 British film "Dangerous Moonlight", released in the U.S. in 1942 as "Suicide Squadron")
  Richard Addinsell
  
• Radio Readers Digest
  Theme: Radio Readers Digest Theme
  Nathan Lang Van Cleave
  
• Railroad Hour, The
  Theme: I've Been Working On The Railroad [aka: The Levee Song]
  Traditional U. S. Folk Song
  
• Rainbow Court --
  see "Song of the City"
  
  Ralph Edwards --
  see "This Is Your Life"
  
  Ray Anthony [big band shows]
  Signature Theme on various shows: Man With The Horn, The (1946)
  Eddie DeLange; Jack Jenney; Bonnie Lake
  
• Ray Bloch Music Party
  Theme: Ray Bloch Music Party Theme
  Raymond A. ["Ray"] Bloch
  
• Ray Bloch's Varieties
  Theme: Music In My Fingers
  Richard Myers (m); Edward Heyman (w)
  
• Ray Bolger Show, The
  Theme: Once In Love With Amy (from the 1948 musical "Where's Charley?" starring Ray Bolger)
  Frank Loesser
  
• Ray Kinney [big band shows]
  Signature Theme on various shows: Across The Sea (1919)
  Ernest K. Kaai; Johnny Noble; Ray Kinney
  
• Ray McKinley [orchestra shows]
  Signature Theme on various shows: Howdy, Friends
  Ray McKinley
  
• Ray Noble [orchestra shows]
  Signature Theme 1 on various shows: Good Night, Sweetheart [from the 1931 revue "Earl Carroll Vanities"]
  Ray Noble; Jimmy Campbell; Reg Connelly
  
• Signature Theme 2 on various shows: Very Thought Of You, The
  Ray Noble
  
• Raymond Scott [orchestra shows]
  Signature Theme 1 on various shows: Pretty Little Petticoat
  Raymond Scott (professional name of Harry Warnow); Jack Lawrence
  
• Signature Theme 2 on various shows: Toy Trumpet, The
  Raymond Scott (professional name of Harry Warnow); Lew Pollack; Sidney D. Mitchell
  
• Real Silk Program, The
  Theme: Spectator March (from "Real Silk" Radio Program)
  Harry Sosnik
  
• Red Nichols [big band shows]
  Signature Theme on various shows: Wailing To The Four Winds
  probably Loring ["Red"] Nichols (unverified at this time)
  
• Red Norvo [big band shows]
  Signature Theme on various shows: Mr. and Mrs. Swing
  Red Norvo
  
• Red Ryder
  Theme: Streets of Laredo, The [aka: The Dying Cowboy]
  Traditional U.S. Western Song
  
• Red Skelton Show, The
  Open Theme 1, circa 1941: Jersey Jive, The
  Ozzie Nelson
  
• Close Theme 2, circa 1941: Green Eyes (Aquellos Ojos Verdes)
  Nilo Menendez (m)
  
• Theme 3, circa 1942: Great Day [aka: It's a Great Day...]
  Vincent Youmans; William Rose; Edward Eliscu
  
• Theme 4, from 1943: Holiday For Strings
  David D. Rose
  
• Richard Diamond, Private Detective
  Theme: Leave It To Love
  Henry (professional name of Henry Russell Olson Russell; By Dunham (w)
  
• Richard Himber [orchestra shows]
  Signature Theme 1 on various shows: Am I To Blame? (1930)
  Victor Young (m); M. Neumann (m); Gus Kahn (w); Richard Himber (w)
  
• Signature Theme 2 on various shows: It Isn't Fair
  Richard Himber; Frank Warshauer; Sylvester Sprigato
  
• Right To Happiness, The
  Theme: Song of the Soul [incidental music for the 1909 drama "The Climax"]
  Joseph Carl Breil (m); Edward Locke (w)
  
• Rin Tin Tin, The Adventures of
  Theme: Rin Tin Tin, The Adventures of
  Henry ["Hank"] Sylvern
  
• Ripley's Believe It Or Not --
  see "Believe It Or Not"
  
  Riverside Hour, The [Montgomery Ward's Riverside Hour]
  Theme: Spirit Of Progress March (1928)
  J. Oliver Riehl
  
• Road of Life, The
  Theme: Andante Cantabile, First Movement Theme from the "Pathetique" Symphony No. 6 in B minor (Opus 74) [popular title: "The Story of a Starry Night"]
  Piotr Ilyich ["Peter"] Tchaikovsky; Joseph Carl Breil (adapter/arranger)
  
• Romance of Helen Trent, The
  Theme: Jaunita from "Songs Of Affection" [adapted from the "Sarabande" from Handel's first opera "Almira" (1705); melody also used in the aria "Lascia Ch'io Pianga" (Let Me Cry) from his opera "Rinaldo" (1711)]
  George F. Handel (m); Caroline Norton (adapter)
  
• Rosa Rio Rhythms
  Theme: Sunrise Serenade
  Frankie Carle (m); Jack Lawrence (w)
  
• Rose, David --
  see "California Melodies"
  
  Rosemary
  Theme: Rosemary Love Theme, The
  Paul Taubman
  
• Roy Rogers Show, The
  Post Cereals Sponsorship Open Theme, before 1953: Double-R-Bar, The [aka: It's Roundup Time on the Double-R-Bar]
  Dale Evans
  
• Quaker Oats Sponsorship Open Theme, before 1953: Smiles Are Made Out Of Sunshine [aka: "Smiles Are Made Out Of The Sun"] (1943)
  Ray Gilbert
  
• Close Theme, before 1953; Main & End Theme from 1953: Happy Trails
  Dale Evans
  
• Rudy Vallee
  Signature Theme 1 on various shows: My Time Is Your Time (1924)
  Leo Dance (m); Eric Little (w)
  
• Signature Theme 2 on various shows: On The Air (1932)
  Jimmy Campbell; Reg. Connelly; Carroll Gibbons
  
• Rubinoff Orchestra, The
  Signature Theme 1 on various shows: Give Me A Moment Please [from the 1930 Jeanette MacDonald film "Monte Carlo"]
  Richard A. Whiting; Leo Robin; W. Franke Harling
  
• Signature Theme 2 on various shows: Fascination Waltz
  Al Lewis; Dave Rubinoff
  
• Russ Morgan [orchestra shows]
  Signature Theme on various shows: Does Your Heart Beat For Me?
  Russ Morgan