Turning to singing, her performance career began with a booking as the opening act for Eric Andersen at The Egress, a club in Vancouver, British Columbia.

This led to Larson singing with Hoyt Axton and The Banana Band, who were opening for Joan Baez on the "Diamonds and Rust" tour in 1975.

Larson continued her background singing career into 1978, accruing credit on recordings by Marcia Ball, Rodney Crowell, Emmylou Harris (Quarter Moon in a Ten Cent Town), and Norton Buffalo.

Linda Ronstadt, Valerie Carter, Bill Payne, James Burton, and Patrick Simmons performed on the Nicolette album.

[9] In 1979 the Warner Brothers Music Show label issued 500 promotional copies of the 12" vinyl record album WBMS 103 titled "Nicolette Live at the Roxy" comprising a December 20, 1978, concert that given by Larson at the Sunset Boulevard nightclub.

Larson was also featured on the No Nukes album recorded in September 1979 at Madison Square Garden, backed by the Doobie Brothers in her performance of "Lotta Love".

'Let Me Go, Love' ... McDonald's entrancing vocal presence ... so overshadows Larson's that she seems to be playing second fiddle rather than sharing the lead.

That year Larson was heard on the airwaves via guest appearances on "Say You'll Be Mine" by Christopher Cross and the Dirt Band's "Make a Little Magic".

[11] Larson had continued her background singing career accruing credits on releases by Tom Johnston, Linda Ronstadt (Mad Love), Graham Nash, John Stewart, Albert Hammond, and Rita Coolidge.

Larson again backed the Doobie Brothers on their One Step Closer album; she can be heard on the hit "Real Love."

A song Larson co-wrote with John McFee and Patrick Simmons titled "Can't Let It Get Away" was a 1981 single release for the Doobie Brothers in Japan.

[12] Larson's appearance in a touring production of the C&W musical Pump Boys and Dinettes garnered enough positive reaction for MCA Nashville to sign her in 1983.

Larson's MCA albums, produced by Emory Gordy Jr. and Tony Brown, attracted little critical attention.

Her final mainstream album release was Shadows of Love, a 1988 recording made for the Italian CGD label and produced by Carlo Stretti and Ernesto Taberelli.

Two "Lotta Love" concerts were held on February 20 and 21, 1998, in Santa Monica, CA, to benefit the UCLA Children's Hospital.

[18] Yankovic would later compose "You Don't Love Me Anymore", a style parody of Larson's work, for his 1992 album Off the Deep End.

[19] Larson died on December 16, 1997, in Los Angeles, California, as a result of complications arising from cerebral edema triggered by liver failure.