Product Key Changer & Viewer v.1.10 Product Key Changer is a simple, award-winning software application that enables users to effortlessly view, change and alter their MicrosoftÂ® Windows / MicrosoftÂ® Office Product (CD) Keys.Very simple to use and reasonably priced. Transpose an accompaniment at the drag of a slider. Slow down a passage to practice it at a more manageable tempo then gradually speed it up to attain mastery. Recommendation: This is an excellent program for students and teachers who need a practice tool.

But using the software as a practicing tool would not result in this being a major problem. The only other minor issue is that changing the pitch and tempo does alter the quality of the recording very slightly. It did alter the mix, pulling out some frequencies but I would not suggest that you use this program solely for this feature.

I was not able to successfully use this feature with any recordings that I had. The Cons: The documentation warns that the Karaoke feature will only work under certain conditions (the recording must be in stereo, the voice must be centered and no other instruments on the recording can be centered) and indeed that is the case. The program is very lightweight and extremely easy to use.

There is also an equalizer which allows the user to pull up or pull out certain frequencies in the recording so that you can focus on one voice or instrument.When you have adjusted the tempo and pitch and any frequencies, you can save your settings and download them onto your mobile device or burn to a CD. You can isolate a small section of the piece (a bar or phrase or more) and it will playback that small section in a loop so that you can practice one particularly difficult passage again and again until it is mastered. One excellent feature is the playback loop.

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