To everyone: Take your designs and place them, exactly how they are, onto a black background if they are on white and do the opposite if the logo is on a white background currently. If you lose ANY aspect of the logo, you need to change the color of that part of the logo so that it show on a white background and a black background.
To jdmerlin: Lose the transparent oval in front of the mic and change the color of "Overture" to the blue found in #16 and let me see it on a black background as well after the changes are made.
To Genuine Branding: Lose the arcs #'s 8, 9, and 10. Make the slogan in #9 a lighter gray, but not as light as it is in #8. Then put the logo on a black background. Make the slogan in #8 a darker gray, but not as dark as it is in #9. Then put that logo on a black background.
To feihung: Lose the arcs. They look like "sound waves." If the mic was a speaker, then you would use those arcs in that manner, but a mic is a sound capturing device. Also, use a different font. I would also like to see the mic portion of the logo used as the letter "O" in the word "Voice." Kind of like what copycat did in #'s 3, 4, and 13 but keep the green circle.
To aremmai: Lose the arcs around the mic. Change the color of "VOICE" in the slogan to the same blue in the rest of the logo. After you make those changes, let me see the logo on white just as you currently have it and then put it on black with the same changes made for the white background.