Amy Winehouse. Angela sent this my way to include in my Rock Stars project, she originally got the card from Catherine Delli. Though the card says "Rubberstamp" it looks to be a layered ink wash. Thank you for your consideration, Angela.
Robert Zimmerman. Acrylics. Ol' Bob is the most popular of the musician/ rock star art postcards that I've received, this being the third. Cool, nice, Sandy, thank you. Check out Sandy's interesting works here: