The gentleman covering Led Zep's 'Whole Lotta Love' in the clip below is Sam Edelston from Connecticut and he certainly knows his way around a Mountain Dulcimer. Once the vocal melody line kicks in, his virtuoso status certainly shines through.

Here's another version of the song performed by comedian Bob Marley and it features yours truly on percussion (a 20 ounce empty Dasini bottle).

Perhaps I'm just biased, but I feel there is no doubt who displayed true musical mastery in their performance.