click pitch a then pitch b, and listen closely to guess if pitch b is either sharp or flat compared to pitch a then click "reveal difference" and see if you're right click new pitch to get a new set pressing "r" will reveal a box to type in a new range (positive values only!), the default is 0.5; if you add zeroes to the end of the range you can get more varied values (e.g. 0.200 rather than 0.2) shortcuts: q - pitch a w - pitch b e - reveal difference d - new pitch
clip art found online
