Fanfare 2
From Chrono Wiki, a database for the Chrono series that anyone can edit
"Fanfare 2" is a track composed by Yasunori Mitsuda for the game Chrono Trigger. It is the second track on the second disk from the original soundtrack. This very brief soundbite activates when the player or party receives hidden items, or receives items as a result of a quest or minigame. Items obtained from Sealed Chests spark this clip, while winning Poyozo Dolls or Cat food in Leene Square also causes the song to play.