She was a coloratura soprano who spurned opera for popular music, a Polish singer who became a cabaret star in Las Vegas, an artist trapped for years behind the Iron Curtain when she flew home to tend to her dying mother.

Violetta Villas, 73, died Dec. 5 at her home in Lewin Klodzki, a village in southern Poland, local police spokesman Pawel Petrykowski told the Associated Press. Prosecutors have ordered an autopsy to determine the cause of death, he said Tuesday.

Ms. Villas was born Czeslawa Cieslak in 1938 to a Polish coal miner’s family in Belgium.

A unique talent with a trademark cascade of curly blond hair, Ms. Villas had a voice that spanned four octaves. Rather than pursue an operatic career, she preferred popular music, a genre that brought her wide popularity in Poland — where the family returned in 1948 after World War II — and abroad.

She once said her career was launched in 1960 by the head of state Polish Radio, composer Wladyslaw Szpilman — whose own story of survival during the Holocaust was the theme of director Roman Polanski’s Oscar-winning movie “The Pianist.”

Violetta Villas, a Polish popular singer and a Las Vegas star in the 1960s, died Dec. 5 at the age of 73. (Piotr Hawawalej/AP)

From 1966 to 1969, Ms. Villas sang at the Casino de Paris at the famed Dunes Hotel in Las Vegas, performing with Frank Sinatra, Barbra Streisand, Paul Anka and Eartha Kitt. She also recorded songs for Capitol Records.

Ms. Villas also appeared in movies, including “Paint Your Wagon” with Lee Marvin and “Heaven With a Gun” with Glenn Ford in 1969.

In 1970, she returned to Poland to tend to her ailing mother. Communist authorities later refused to approve her passport. She was not able to return to the United States until 1987, when she had a tour, starting at New York’s Carnegie Hall.

Ms. Villas was known as a colorful personality who refused to bend to the requirements of a career. Since the late 1980s, she had given only occasional performances and sometimes failed to turn up for studio recordings.

In recent years, she lived alone and ran a shelter for animals in her yard. The shelter had to be closed because of overcrowding and insufficient care.

Ms. Villas was married twice, in 1954 in Poland to Piotr Gospodarek and in 1988 in Chicago to Ted Kowalczyk, a businessman of Polish descent. Both marriages ended in divorce. Survivors include her son, Krzysztof.

— Associated Press