Waveform: Sine Square Sawtooth Triangle Gain: Filter Type: Lowpass Highpass Bandpass Filter Frequency: Keyboard 2 C# W D 3 D# E E R F 5 F# T G 6 G# Y A 7 A# U B Z C S C# X D D D# C E V F G F# B G H G# N A J A# M B Q C