1926

Nach Amerika zurückgekehrt begann er für das Broadway-Theater erste Kompositionen zu schreiben, daneben entstand auch die Ballett-Musik zu "The Music Man" und "The Wind in the Mountains". 

Beim Film trat er erstmals in den 50er Jahren mit "Yellowneck" (55) und "Naked in the Sun" (57) in Erscheindung. In den 60er Jahren folgten Filmkompositionen zu "Rashomon" (61), "A Raisin in the Sun" (61), "The Miracle Worker" (62), "Becket" (64), "Michelangelo: The Last Giant" (66), "Hotel Paradiso" (66), "The Comedians" (67) und "Three" (69). Für "Becket" wurde er für einen Oscar nominiert. 

In den 70er Jahren folgten eine Vielzahl weiterer Filmkompositionen, sowohl für Film als auch für Fernsehen, dazu gehören "Night Chase" (70), "The Last Child" (71), "Man of La Manche" (72) – die ihm die zweite Oscar-Nomination einbrachte, "Death Sentence" (74), "Murder on Flight 502" (75), "The Return of a Man Called Horse" (76), "Fantasy Island" (77), "The Island of Dr. Moreau" (77), "Murder in Peyton Place" (77), "Brass Target" (78) und "Meteor" (79). 

Im folgenden Jahrzehnt entstanden nochmals viele dankbare Kompositionsaufträge für Filme wie "Revenge of the Stepford Wives" (80), "Clash of the Titans" (81), "Easy Money" (83), die Serie "George Washington" (84), "Blackout" (85), die Serie "Peter the Great" (86), "Anastasia: The Mystery of Anna" (86), "The Bourne Identity" (88) und "Pursuit" (89). 

Zu seinen jüngsten filmischen Arbeiten zählen "Mark Twain and Me" (91), die Serie "The Young Indiana Jones Chronicles" (92-93), die Serie "The Adventures of Young Indiana Jones" (94-08), "The Man Who Captured Eichmann" (96), "The Face" (98), "Inherit the Wind" (99) und "Master Spy: The Robert Hanssen Story" (02). 

Neben der Filmmusik schrieb Laurence Rosenthal auch Kammermusik, Symphonien und Orchestermusik. 
 

Weitere Filme von Laurence Rosenthal:
Serie "The Twentieth Century: Dirigible" (60) Dark Odyssey (61) The Power and the Glory (61) Requiem for a Heavyweight (62) Serie "The Twentieth Century: The Western Hero" (63) Serie "Coronet Blue" (67) How Awful About Allan (70) The House That Would Not Die (70) Serie "The Best of Everything" (70) A Gunfight (71) Serie "Mannix: Dark So Early, Dark So Long" (71) Sweet, Sweet Rachel (71) Serie "Banyon" (72) Serie "Hec Ramsey" (72) Lapin 360 (72) The Devil's Daughter (73) Serie "The Rookies: Snow Job" (73) Serie "The Rookies: The Wheel of Death" (73) Call to Danger (73) Pueblo (73) Portait: A Man Whose Name Was John (73) Satan's Schoold for Girls (73) The Missiles of October (74) The Log of the Black Pearl (75) Rooster cogburn (75) A Home of Our Own (75) State Fair (76) Young Pioneers (76) The Story of David (76) Death at Love House (76) 21 Hours at Munich (76) Young Pioneers' Christmas (76) Portrait of a Hitman (77) The Amazing Howard Hughes (77) Serie "Logan's Run: The Collectors" (77) The Hunted Lady (77) Return fo Fantasy Island (78) Who'll Stop the Rain (78) And I Alone Survived (78) Meetings with Remarkable Men (79) Orphan Train (79) The Day Christ Died (80) F.D.R.: The Last Year (80) Rage! (80) The Patrica Neal Story (81) The Letter (82) Who Will Love My Chldren' (83) Heart Like a Wheel (83) License to Kill (84) The Lost Honor of Kathryn Beck (84) Serie "Fantasy Island" (78-84) The Hearst and Davies Affair (85) Consenting Adult (85) Serie "Evergreen" (85) Serie "Mussolini: The Untold Story" (85) Serie "On Wings of Eagles" (86) Stranger in My Bed (87) Fight for Life (87) Proud Men (87) Downpayment on Murder (87) Freedom Fighter (88) My Father, My Son (88) To Heal a Nation (88) Street of Dreams (88) In the Line of Duty: The F.B.I. Murders (88) Brotherhood of the Rose (89) The Forgotten (89) My Name Is Bill W. (89) Billy the Kid (89) The Plot to Kill Hitler (90) Blind Faith (90) The Incident (90) The Kissing Place (90) Serie "Strauss Dynasty" (91) The Adventures of Young Indiana Jones: Daredevils of the Desert (92) The Fire Next Time (93) Triumph Over Disaster: The Hurricane Andrew Story (93) Catherine the Great (95) The Member of the Wedding (97) The Echo of Thunder (98) A Time for Dancing (00) Majestic White Horses (01) Wild Iris (01) Stealing America: Vote by Vote (08)