My lovely best friend Esther is the Lady of the Lake in Spamalot (A Broadway play, on tour) and they are coming to Fayetteville this fall!
Click on the link to see her singing “the Diva’s Lament” . My favorite is “The song that goes like this” a spoof of the Phantom of the Opera. You may fast forward a little to get to it, (around 3 1/2 minutes) but it’s worth a watch. Get tickets now, the show is hilarious (I’ve seen it in Tulsa, Chicago and Atlanta!) and they are selling quick! 
Esther seriously has the best voice of anyone I know, this poor video/sound quality doesn’t do her justice! But, of course, I’m not at all partial!