an idea for a singing guitar hero
 

you sing but it only sounds through the speaker if the hz of the note you sing are within acertain right margin of the songs note

i guess this is a seed that a might see in the future :)

i wont tell you how i got the idea, too crazy even for me :)

isn't that almost like Rockband/Sing it/Singstar

not sure but it would be nice for both parties the public wouldnt listen people wildly out of tune :)