In 1933, the composer Florence Price turned the primary African-American girl to have a symphony carried out by a significant American orchestra. But her work light from live performance halls through the years.

Her music has been rediscovered lately, notably after a trove her manuscripts was found in 2009, in her former summer season residence exterior Chicago. And, on Thursday, the music writer G. Schirmer introduced that it had acquired the worldwide rights to her catalog.

“It’s my hope that Florence Price’s contribution to the canon of American music will lastly be acknowledged and correctly assessed,” Robert Thompson, the president of G. Schirmer, wrote in an e mail. “She has been uncared for for too lengthy.”

Price, who was born in 1887 to a middle-class household in Little Rock, Ark., turned a outstanding member of the African-American intelligentsia, corresponding with W.E.B. Dubois and setting poems by Langston Hughes and Paul Laurence Dunbar to music.

But she confronted many obstacles getting her music performed in a extra sexist, segregated period, which she addressed in a 1943 letter that she wrote to Serge Koussevitzky, the music director of the Boston Symphony Orchestra, asking him to think about performing her music.

“Unfortunately the work of a lady composer is preconceived by many to be mild, froth, missing in depth, logic and virility,” she wrote. “Add to that the incident of race — I’ve Colored blood in my veins — and you’ll perceive a number of the difficulties that confront one in such a place.”

In addition to symphonies and violin concertos, she additionally wrote preparations of spirituals: The contralto Marian Anderson sang Price’s association of “My Soul’s Been Anchored in De Lord” at her historic live performance on the Lincoln Memorial in 1939. Price died in 1953.

Renewed curiosity in her work has led to performances this yr by Baltimore Symphony Orchestra, the Arkansas Philharmonic Orchestra, the Orchestra of St. Luke’s and the Fort Smith Symphony. Her Piano Concerto shall be carried out later this month by the pianist Aaron Diehl and the New Jersey Symphony Orchestra.

Price’s granddaughter, Vicki Hammond, stated in an announcement: “We are so proud that our grandmother has been rediscovered at a time when the prime quality, worth and great thing about her work just isn’t negated resulting from her gender or shade.”

Earlier this yr, Schirmer introduced that it had acquired the publishing rights to the work of the minimalist composer Julius Eastman, who died in obscurity in 1990, one other African-American composer who had struggled for recognition throughout his lifetime.

Asked what Schirmer was doing about signing residing African-American composers — at a time when girls and other people of shade nonetheless wrestle to have their music carried out — Mr. Thompson stated that the corporate had been “proactive in publishing an amalgam of composers that characterize the varied society during which we reside, and we’re continually in search of out new voices in modern classical music that replicate this evolving range.”

“At the identical time,” he wrote, “it’s additionally necessary that we seize upon the chance to insure that previous composers like Julius Eastman and Florence Price are usually not forgotten, and that their legacies reside ones, celebrated by reside performances and new recordings.”