Red Hot Chili Peppers star Flea has teamed up with revered artist Damien Hirst to release a colourful new line of bass guitars for charity.
Every instrument in the limited edition collection has been numbered and hand signed by the pair, with all proceeds benefiting the rocker's Silverlake Conservatory of Music organisation.
But the guitars don't come cheap - they range from $10,000 (£6,250) to $50,000 (£31,250) each.