s1 = {"wave":"sinus", "freq":"230", "length":"0.5"}
s2 = {"wave":"sinus", "freq":"250", "length":"0.5"}
s3 = {"wave":"sinus", "freq":"280", "length":"0.5"}
s4 = {"wave":"sinus", "freq":"300", "length":"0.5"}

data = [s1,s2,s3,s4]

def get_sound_data():
    return data