A one-of-a-kind mosaic of legendary guitarist Jimi Hendrix made of 5,000 plectrums has been auctioned off during an event for Cancer Research UK.

The portrait was created by Ed Chapman, one of Britain’s leading mosaic artists, who said it took him several days to complete. The plectrums used to create the 120 cm x 100 cm artwork are made by Fender, the guitar brand Hendrix is known to have been most fond of. “I decided to use plectrums to create a portrait of him because I like experimenting with different materials and textures and I think it is a fitting tribute to the musician.” Chapman says.

39-year-old Chapman began making mosaics in the 1990s, and has tried to put a modern twist on this ancient art form. His previous works include mosaics of John Lennon, Eric Cantona, and ManU manager Alex Ferguson.