Had a scare in the early 90's when I had severe burns on the tops of my ears, it actually cooked the cartilage like a bratwurst and hurt like hell.
Ever since then, I have been using the Banana Boat Sport spray sunscreen SPF 30 on my face, neck and arms every single day and wear a stupid looking floppy hat when I know my exposure is going to be greater than normal. It seems normal now that I have been doing it so long. One of my good friends went through the skin grafts and radiation treatments for Melanoma and it literally opened my eyes.
I literally work outside, sometimes on metallic/reflective roofs all day, every day.
I am so glad to hear you caught it so early. So rock on, but take steps to make sure you can be an old ass rocker, it pisses the youngn's off...

GT