David Letterman, the biggest late night TV comedian, is retiring in one year. The night he announced his retirement, he had a new band on his show (March 27). This band was not well known. It is now. After the group was put on YouTube, it “went viral” meaning it acted like a virus and grew very very quickly, with almost a million people watching. The new band is called Future Island. Look for more of them in the future. They sang the song Seasons (Waiting on You). Lyrics.