Assertion: guitar's note | /r/HasProperty | introduced in guitar hero world tour
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Source sentences:
text: There are also note portions of some songs where notes appear semi-transparent relative to normal notes; these notes, introduced in Guitar Hero World Tour, can be played simply by tapping the correct buttons on the controller without strumming or using a touch-sensitive "slider bar" below the fret buttons, if the player is using a World Tour controller.