Happy (belated) birthday to Angus Young, who was born on March 31, 1955 in Glasgow, Scotland.

Guitarist and songwriter of AC/DC, this forever schoolboy not only celebrates his birthday, he celebrates four decades with the band he co-founded.

It was hoped a new album would be released this year to coincide with the anniversary of the band, but even though it was confirmed last May that they're working on a possible follow-up to 2008's Black Ice, there's nothing solid to report just yet.