Aerosmith bass player Tom Hamilton will make an appearance Thursday, Jan. 31 at noon at Boston’s Hard Rock Cafe, 22-24 Clinton St., near Faneuil Hall.
His plan is to donate to the Hard Rock his 2003 Harley Davidson Fatboy 100th Anniversary bike — a gift to him from Harley — along with a bass guitar and stage outfit from Aerosmith’s recent tour. In return, the Hard Rock will present a check for $30,000 to Massachusetts General Hospital YouthCare, a therapeutic program that helps children develop social skills.

