You mean the speed in which the Notes are displayed ?
Viewing post in Flute'n'Drill jam comments
No problem I've been working on a updated version with better background easier tutorial and over all added aesthetic with 2D lighting even tough it's subtle and the most important thing of all I added or better removed that you have to click on the "button" to make the sound, you're just able to drill and the note will appear automatically. I will update the game as soon as the rating period is over.