i don't think you can. it's annoying :/
When you push the white bar on the body of the guitar up or down. Each move is called a strum and on Guitar Hero guitar, each strum is accompanied by a "click" sound. Sadly there is no click sound when strumming on a Rock Band guitar.
never you always strum if theres a note unless theres a whamy
Its only on the bass guitar, and when it comes to the note slots on the screen, you just strum the strum bar without holding down any notes.
NO THERE'S PLENTY OF CODES TO CHEAT WITH!
http://www.youtube.com/watch?v=YrMq6qwAtzM
For guitar just strum it like a normal note but do not press any fret.
A high quality Photo Repair guide for fixing a double-strumming or broken Guitar Hero World Tour strum bar is here: http://www.powertuneplus.com/gh/ghwt_strumbar_switch.shtm
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Guitar Hero 1, Guitar Hero Rock the 80s, Guitar Hero 2, Guitar Hero 3, Guitar Hero World Tour, Guitar Hero Metallica, Guitar Hero Smash Hits, Guitar Hero 5, Guitar Hero Van Halen
Guitar Hero III (Guitar Hero 3)
you simply shake your hand on the touch screen (what you do to strum)
Music notes You have to tap the colour fret, and strum to hit 'em