Artists like Cass Elliot

The Mamas & the Papas were an American-Canadian folk rock vocal group that recorded and performed from 1965 to 1968, with a brief reunion in 1971. The group was a defining force in the music scene of the counterculture of the 1960s. Formed in New York City, the group consisted of Americans John Phillips, Cass Elliot, and Michelle Phillips, and Canadian Denny Doherty. Its sound was based on vocal harmonies arranged by John Phillips – the songwriter and leader of the group – who adapted folk to the new beat style of the early 1960s.

Anita Jean Kerr was an American singer, arranger, composer, conductor, pianist, and music producer. She recorded and performed with her vocal harmony groups in Nashville, Los Angeles, and Europe.

Edison Lighthouse are an English pop band, formed in London in 1969. The band was best known for their 1970 hit single "Love Grows " recorded in late 1969.

The Carpenters were an American vocal and instrumental duo consisting of siblings Karen (1950–1983) and Richard Carpenter. They produced a distinctive soft musical style, combining Karen's contralto vocals with Richard's harmonizing, arranging, and composition. During their 14-year career, the Carpenters recorded 10 albums along with many singles and several television specials.

Francesco Stephen Castelluccio, better known by his stage name Frankie Valli, is an American singer and occasional actor, best known as the lead vocalist of the Four Seasons. He is known for his unusually powerful countertenor voice.

The Association is an American sunshine pop band from Los Angeles, California. During the late 1960s, the band had numerous hits at or near the top of the Billboard charts and were the opening act at 1967's Monterey Pop Festival. Generally consisting of six to eight members, they are known for intricate vocal harmonies by the band's multiple singers.

Stanley Robert Vinton is a retired American singer and actor, who hosted his own self-titled TV show in the late 1970s. As a teen idol, he became known as "The Polish Prince", as his music paid tribute to his Polish heritage. One of his most popular songs is "Blue Velvet" which reached No. 1 on the Billboard Hot 100 in 1963, No. 1 in Canada, and number 2 in the UK in 1990.

Raymond Edward O'Sullivan, known professionally as Gilbert O'Sullivan, is an Irish singer-songwriter who achieved his most significant success during the early 1970s with hits including "Alone Again (Naturally)", "Clair" and "Get Down". His songs are often marked by his distinctive percussive piano playing style and observational lyrics using word play.

The Foundations were a British soul band primarily active between 1967 and 1970. The group's background was West Indian, White British, and Sri Lankan. Their 1967 debut single "Baby Now That I've Found You" reached number one in the UK and Canada, and number eleven in the US. Their 1968 single "Build Me Up Buttercup" reached number two in the UK and number three on the US Billboard Hot 100. The group was the first multi-racial group to have a number one hit in the UK in the 1960s.

Christopher James Harley, known by his stage name Chris Rainbow, was a Scottish pop rock singer-songwriter and musician, known for his solo work and his significant contributions to The Alan Parsons Project from 1979, as well as his work as a backing and occasional lead vocalist for Camel in the 1980s. Rainbow also composed jingles for Radio One and Capital Radio.

Michele Ann Marie "Shelley" Fabares is a retired American actress and singer. She is known for her television roles as Francine Webster on One Day at a Time, Mary on the sitcom The Donna Reed Show (1958–1963) and as Christine Armstrong on the sitcom Coach (1989–1997), the latter of which earned her two Primetime Emmy Awards nominations. Her film roles include playing the leading lady to Elvis Presley in Girl Happy (1965), Spinout (1966), and Clambake (1967). In 1962, her recording of "Johnny Angel" reached number one on the Billboard Hot 100 chart.

Captain & Tennille were an American recording duo most popular in the 1970s. The husband-and-wife team were "Captain" Daryl Dragon (1942–2019) and Toni Tennille. They have five albums certified gold or platinum and scored numerous hits on the US singles charts, the most enduring of which included "Love Will Keep Us Together", "Do That to Me One More Time", and "Muskrat Love". They hosted their own television variety series on ABC in 1976–77.

The Four Seasons were an American rock band formed in 1960 in Newark, New Jersey. Since 1970, they have also been known at times as Frankie Valli and the Four Seasons. They are one of the best-selling musical groups of all time, having sold an estimated 100 million records worldwide.