Some kind soul created a memorial to Chuck Deely outside the Albert Heijn on the Grote Marktstraat:

Chuck Deely (Dutch Wikipedia) was an American street musician that was active in The Hague from the ’90s until his death on January 2017. I can’t believe it has been four years! There will never be anyone like him again.
He has been honored a few ways since his death, including a statue by Central Station:

He also received a mural in one of the tram tunnels near the Turfmarkt (thehaguestreetart.nl, in English).