“Saturday Night Live” is celebrating its golden anniversary. Tonight’s 50th anniversary special is guaranteed to provide plenty of laughs, musical moments, memories and surprises. If you’re trying to guess what’s ahead, it might be helpful to rewind back to the 40th anniversary celebration to look for clues.

Aykroyd did not provide a reason for missing the event. He was the sole living member of the original “SNL” cast who didn’t attend the anniversary show, which aired live on NBC and Peacock on Sunday, Feb. 16.