"What a Difference a Day Makes" is a song originally written in Spanish by Mexican songwriter María Grever in 1934. The English version of the song was first recorded by Dinah Washington in 1959 and has since been covered by many artists, including Esther Phillips. Esther Phillips version of the song was released in 1975 and is considered one of her most popular songs. The song was included in her album "What a Diffrence a Day Makes". The album was produced by Joe Beck and recorded at Sigma Sound Studios in Philadelphia. It was released by Kudu Records, a subsidiary of CTI Records. The album features a mix of soul, funk, and disco music and was well-received by critics and audiences alike.