A Rã is a Brazilian tune written by João Donato and Caetano Veloso. It began life as an instrumental called The Frog, released in 1970 on João Donato’s album A Bad Donato. In 1973 Caetano Veloso added lyrics and the piece appeared on his album Quem é Quem, turning it into a notable collaboration. The song sits in the bossa nova and MPB traditions. It has been widely re-recorded by artists such as Gal Costa and remains a popular piece with tens of millions of streams on platforms like Spotify.