MidiInput.GetKeyUp C# (CSharp) Method

    public static bool GetKeyUp(MidiChannel channel, int noteNumber)
    {
        return instance.channelArray [(int)channel].noteArray [noteNumber] < 0.0f;
    }

    void Update()
    {
        if (MidiInput.GetKeyDown(keyNumber + 21))
        {
            isDown = true;

            if (keyNumber == song.noteList[0].noteNum)
            {
                // If the MIDI input matches the current target note...

                material.color = Color.Lerp(material.color, Color.blue, 1 - Time.deltaTime);

                if (song.noteList.Count == 1)
                {
                    text.Invoke("Complete", 0);
                }
                else
                {
                    // Pop queue, trigger corresponding effects, update text

                    front.Invoke("PopEffect", 0f);
                    song.noteList.RemoveAt(0);
                    text.text_data.RemoveAt(0);
                    text.Invoke("Refresh", 0);
                }
            }
            else
            {
                // If note played is incorrect, change color of both the note text and corresponding
                // piano key to red

                material.color    = Color.Lerp(material.color, Color.red, 1 - Time.deltaTime);
                front.front.color = Color.Lerp(front.text.color, Color.red, 1 - Time.deltaTime);

                Debug.LogFormat("WRONG NOTE! Expected: {0} {1}", song.noteList[0].noteName, song.noteList[0].noteOctave, song.noteList[0].duration);
            }
        }
        else if (MidiInput.GetKeyUp(keyNumber + 21))
        {
            // Reset colors to default if no note is played

            isDown            = false;
            material.color    = Color.Lerp(material.color, col, 1 - Time.deltaTime);
            front.front.color = Color.Lerp(front.text.color, Color.green, 1 - Time.deltaTime);
        }
    }