Jean Knight, the voice of funk classic “Mr. Big Stuff,” is dead at age 80.

Her publicist told TMZ that the R&B/soul singer died of natural causes this past Wednesday.

Her songs included “Carry On,” “Do Me,” “My Toot Toot,” “Helping Man,” “Jesse Joe (You Got to Go),” and “You Think You’re Hot Stuff,” but is best known for “Mr. Big Stuff,” which hit No. 2 on the Billboard Hot 100 in 1971. “Jean Knight’s legacy is not just a musical one; it is a testament to the enduring love between an artist, her hometown, and the fans who adored her,” her family said in a statement. “As we bid farewell to this iconic soulstress, New Orleans and her global fan base join together in gratitude for the indelible mark she left on the world.”