damn! I was sort of thinking someone who had gotten a hold of Nightblood for the suicide clue, but was avoiding people on Nalthis because I think if they're not specifically drabs then they are technically invested. But that's heavy rules lawyering.
It is indeed the cheering Tien! He found this interesting round and he wants you to have it! Rest of the clues were:
1. All Those Years Ago
2. Rainy Days and Mondays
3. And When He Smiles
4. Happy
5. Can't Smile Without You
all songs by...The Carpenters