pub const C_4: u8 = 0;
pub const C_3: u8 = 12;
pub const C_2: u8 = 24;
pub const C_1: u8 = 36;
pub const C0:  u8 = 48;
pub const C1:  u8 = 60;
pub const C2:  u8 = 72;
pub const C3:  u8 = 84;
pub const C4:  u8 = 96;
pub const C5:  u8 = 108;
pub const C6:  u8 = 120;

pub enum Pitch {
    C = 0,
    Cs,
    D,
    Ds,
    E,
    F,
    Fs,
    G,
    Gs,
    A,
    As,
    B
}