The Doreen Allen Company is Proud to Present the Turn the Wheel - Change a Key Music Transposer and Educational Tool.

Transposer.com has this general purpose tool that is a valuable aid for students, teachers, musicians and anyone interested in understanding practical music theory.

(PRWEB) December 19, 2004 -- One simple and sturdy tool is now available for only that helps you transpose music quickly from one key to another, find corresponding notes in any key and do much more. This can be used for any instrument.

The transposer determine the notes in a given scale. Finds the notes in any chord. Transposes from one key to another. Find an unknown key knowing only one corresponding note (or chord) within the known (Present Key) and within the unknown key (Final Key). Determines CAPO positioning on the guitar. And determines the number of sharps or flats in a particular key signature.

Turn the Wheel - Change a Key is a general purpose tool designed to enhance the mastery of music theory for the student of music. It is also an ever-ready aid for those who need help when performing transposition tasks.

As an engineer - Allen Mollenhauer was used to thinking about problems and their solutions. The slide rule was his most important tool and was used to solve math problems. He pictured a similar tool solving his music related problems. His first attempt at developing this tool was to use a fixed octave of notes with their half tones with another octave and half tones that would slide under the fixed one. But as he slid the movable octave to the right, some of the right most notes on the movable octave didnt have any notes above them to be referred to and likewise on the left side some of the notes on the fixed octave didnt have any notes below them. So he doubled the amount of octaves on each line and again ran into the same problem. Then he thought about using a circular approach and that finally solved the problem.

At this point though, he didnt have a means of orderly determining the notes in a given scale, the notes that make up a particular chord or to point to the corresponding notes and chord roots when changing keys. This is where the Index Pointer scale comes in. It points to the notes in a given scale as well as the half tones. He placed this scale between the others and voila" the transposer wheel.

# # #