"…and Arda was filled with the sound of his laughter…"

"….and Melkor fled before his wrath and his laughter…"

I tried to make an audio file with our favourite laughters (Gandalf, Frodo, Gimli, Merry, Pippin and Theoden) to help you imagine Tulkas laughter in Middleearth :D

I take it for the Tulkas Bingo sqare on the Team Ainur Card