Scratron is Drawing Music Sequencer for all scratcher. This is really simple. tempo=speed of beat res=drums responce Drum=volume of Hihat and Snare bar=which bar is playing now count=count of 1/16beat c1~c4=name of 4 bar !Caution Scratron has chord bank 0~18. You can set those chords at c1~c4. chord list (0=blank) 1=C 2=7th 3=9th 4=F 5=7th 6=9th 7=G 8=7th 9=9th 10=Am 11=7th 12=9th 13=Dm 14=7th 15=9th 16=Em 17=7th 18=9th O=over volume Oc=over cut A=arp volume Ac=arp cut B=bass volume tone color=monofone keybord's tone color cut=monofone keybord's cut the gray bar side by pen/erace=clear red buttom=crick1/16