NEW YORK (AP): An auction of David Gilmour's guitars has raised a lot of Money — to combat climate change.

Christie's auction house says it raised $21.5 million Thursday, selling off more than 120 guitars owned by the Pink Floyd guitarist, singer and songwriter.

Proceeds went to ClientEarth, a nonprofit fighting climate change.

The items included guitars by Fender, Rickenbacker, Ovation, Gibson, CF Martin and Gretsch, including guitar cases, a banjo and amps.

A black Stratocaster — dubbed the 'Black Strat' — was the top item and was snatched up for $3,975,000, a new world record for a guitar at auction.

Gilmour tweeted: "We need a civilised world that goes on for all our grandchildren and beyond in which these guitars can be played and songs can be sung."