I don't think it'll matter at all. I mean, I never explicitly thought of a karaoke case when designing Doug's power, but gods know there are any number of folk songs out there that share the same tune but have radically different lyrics. Case in point -- these two songs:
(It's uncredited on the video, but that's the Chad Mitchell Trio singing "Super Skier".)
The fact that the music is all but identical between them is irrelevant -- it's just a "carrier", if you will, to feed the lyrics to Doug's gift. And I've always noted that it's the lyrics, not the music, which governs at least the "domain" of the power set that results -- although different performances of the same lyrics can result in different subsets of that domain. To continue the above examples in a rather tongue-in-cheek manner, the first song would grant some manner of subway powers, while the second would be skiing, winter or general idiocy.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.
(It's uncredited on the video, but that's the Chad Mitchell Trio singing "Super Skier".)
The fact that the music is all but identical between them is irrelevant -- it's just a "carrier", if you will, to feed the lyrics to Doug's gift. And I've always noted that it's the lyrics, not the music, which governs at least the "domain" of the power set that results -- although different performances of the same lyrics can result in different subsets of that domain. To continue the above examples in a rather tongue-in-cheek manner, the first song would grant some manner of subway powers, while the second would be skiing, winter or general idiocy.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.