A Google Doodle is a special, temporary alteration of the logo on Google's homepages intended to commemorate holidays, events, achievements, and notable historical figures.
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Today’s Doodle celebrates Mexican singer and songwriter María Grever, considered to be one of the country’s greatest composers. Grever spent a lifetime producing hundreds of songs that went on to be covered by some of the world’s most famous artists, like Placido Domingo, Aretha Franklin, and Frank Sinatra. On this day in 1938, Grever recorded “Ti-Pi-Tin,” a waltz about serenading your loved ones that became one of her biggest hits.
Wikipedia:
María Grever [[14 September 1885 – 15 December 1951) was the first female Mexican composer to achieve international acclaim. She is best known for the song "What A Difference A Day Makes" [[originally "Cuando vuelva a tu lado"), which was popularized by Dinah Washington and has been covered by numerous artists.