Stevie Wonder's "Happy Birthday" became a huge hit, reaching No. 1 on the Billboard Hot 100 chart. The song not only celebrated birthdays but also served as an anthem for the "Free Angela" movement, supporting Angela Davis, a civil rights activist.

The story behind Stevie Wonder's involvement with "Happy Birthday" is quite interesting. In 1980, Stevie Wonder was approached by the NAACP (National Association for the Advancement of Colored People) to record a version of "Happy Birthday" for a campaign to end racial discrimination. The campaign aimed to encourage more African Americans to register to vote. Stevie Wonder was inspired by this cause and decided to record a funky, energetic rendition of the song.

"Happy Birthday" by Stevie Wonder is a notable version of the traditional birthday song. The song was originally written by two American sisters, Patty Hill and Mildred J. Hill, in the late 19th century. However, Stevie Wonder's version, released in 1981 on his album "Hotter Than July," brings a fresh and upbeat twist to the classic.