The Life of the Party (1930)
The Life of the Party is a 1930 American musical comedy film photographed entirely in Technicolor. The musical numbers of this film were cut out before general release in the United States because the public had grown tired of musicals by late 1930. Only one song was left in the picture. The complete film was released intact in countries outside the United States where a backlash against musicals never occurred. It is unknown whether a copy of this full version still exists. The film only survives in a black and white copy (of the United States release print) made in the 1950s for television.
More at Wikipedia.