She studied singing, and her performances at festivals and on recordings catapulted her to popularity in Italy and elsewhere in Europe in the 1970s and ’80s.
Her album “Saffo Music” (1977), recorded in Los Angeles and produced byLeon Ware, who also worked with Michael Jackson and Marvin Gaye, featured backing vocals by the Pointer Sisters.
In 1988, she returned to the Sanremo Festival as a producer. Four years later, she was the host of a television special featuring Frank Sinatra, Liza Minnelli and Harry Belafonte.
She also owned a record company with her husband.
In 1995 she wrote and, with her husband, produced “The Best Is Yet to Come,” a television documentary about Luciano Pavarotti.
Her survivors include two daughters, two grandchildren and a sister.
Elisabetta Povoledo contributed reporting from Rome.
A version of this article appears in print on May 17, 2018, on Page B14 of the New York edition with the headline: Lara Saint Paul, 73, Singer And Fitness Guru of Italy. Order Reprints | Today’s Paper | Subscribe