Paul McCartney's bass guitar sold for more than $64,000 at a fundraiser for music charity Nordoff Robbins.

The kind-hearted Beatle signed and donated the iconic Hofner 'violin' guitar to the music therapy charity's annual O2 Silver Clef Event in London on Friday.

Speaking prior to the auction McCartney stated, "I am delighted to have signed and donated this very special left-handed Hofner bass in order to raise funds for Nordoff Robbins. The work they do with music therapy transforms the lives of vulnerable children and adults across the U.K., and I hope the sale of this guitar raises a lot of money."

More than $400,00 was raised during the event.