I love toys. Especailly ones that make my life eaisier. And I miss my old slide
rule of the
60's-70's.

If you're getting involved with any sort of music theory, this tool is a must
have.

This MasterKey slide tool instantly transposes your favorite songs.

Works out all the positions for Major, Major 7th, Minor, Minor 7th, Dominant
7th,
Diminished, Diminished 7th and Augmented chords.

Lists all the the scales from the Major, Natural Minor, Harmonic Minor... to the
Blues.

it is sooooo cool. I just love toys.

Links (both links have demos)

http://mymasterkey.com/

less expensive on eBay about $26.00 US eBay (keyword = masterkey ukulele)

http://cgi.ebay.com/MasterKey-for-Mandolin-Ukulele-Banjo-Guitar-See-
DEMOS_W0QQitemZ7411565986QQcategoryZ10179QQssPageNameZWDVWQQrdZ1QQcm
dZViewItem