A Gengar that sings opera? You gotta be kiddin' me! Aren't Gengar supposed to be doin' the hauntin' thing? Unless your friend's Gengar used to haunt an opera house, maybe all that singin' rubbed off on'im.

You should try recordin' him an' puttin' it on the net. I don't like opera but it'd be somethin' interestin' to see, I guess.