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).

• Yeast Foamers' Orchestra, The - "Yeast Foamers' March, The" - J. Oliver Riehl
  
• You Are There - "Fanfare For The Common Man" - Aaron Copland
  
• You Bet Your Life (Groucho Marx Show, The) (NBC, 1952-53)
  1. Theme Medley [part 1]: "Hooray For Captain Spaulding" [from "Animal Crackers"] - Harry Ruby; Bert Kalmar
  2. Theme Medley [part 2]: "Groucho and the Wolf" - Jack Meakin
  3. "You Betcha Life" (medley of "Hooray for Captain Spaulding" and "Groucho and the Wolf" B-Theme) - Jack Meakin; Harry Ruby; Bert Kalmar
• You Don't Say - "You Don't Say Theme" - Rex Koury; William Yazeman; Ralph H. Andrews
• Young Doctor Malone [Crisco sponsorship]
  1. Sponsor Billboard "Alexander's Ragtime Band" - Irving Berlin
  2. "Prelude" [aka: "Prelude in D"] - John Winters
• Young Widder Brown
  1. "In The Gloaming" - Lady Arthur (m Hill; Meta Orred (w)
  2. "Young Widder Brown Theme" - Lewis P. ["Lew"] White
  3. "Wonderful One" [actual title: "My Wonderful One"] - Paul Whiteman (m); Ferde Grofe (m); Dorothy Terriss (w)
• Your Family And Mine - "Look For The Silver Lining" [from the 1920 musical "Sally"] - Jerome Kern (m); B. G. ["Buddy"] De Sylva (w)
• Your Lucky Strike Hit Parade
  1. "Happy Days Are Here Again" [1929 film "Chasing Rainbows"] - Milton Ager (m); Jack Yellen (w)
  2. "Lucky Day" - Ray Henderson (m); B.G. DeSylva (w); Lew Brown (w)
  3. "Be Happy, Go Lucky" [Lucky Strike Jingle] - Raymond Scott (pseudonym of Harry Warnow)
  4. Closing: "So Long For Awhile" - Irving Chansky
• Yours Truly, Johnny Dollar
  1. probably Mark Warnow
  2. circa 1955: "Love Theme No. 1, from the MUTEL music service library" - George Lee
• Youth On Parade - "Greetings From Home (1943)" - Dolphe Martin