Over the course of a career that lasted some sixty years, pianist, producer and songwriter Allen Toussaint's music and sound became a hugely influential force for artists working in many different genres. Toussaint died on Monday night in Madrid, at the age of 77.

As the news has spread, artists and other luminaries have been pouring out their grief on social media. Here's a selection of their tributes.Over the course of a career that lasted some sixty years, pianist, producer and songwriter Allen Toussaint's music and sound became a hugely influential force for artists working in many different genres. Toussaint died on Monday night in Madrid, at the age of 77.

As the news has spread, artists and other luminaries have been pouring out their grief on social media. Here's a selection of their tributes.

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