The name of what genre of music completes these quotes from when the protagonists of How I Met Your Mother found a lost episode of "Underneath the Tunes"? (It's the same word both times.)
Alex Trebek: "That day is now known in music history as the day [BLANK] was born."
Ted: "In 1996? In Canada? That seems right, Trebek."
Marshall: "Give him a break, he's not a music guy."
Geddy Lee: "That day is now known in music history as the day [BLANK] was born."
grunge