ARDUINO + musical instrument shield to make a Keyboard

Other Hardware Audio
12

This is a re-post with a code tag.
This time is the first time to use code tags. If I'm wrong, please tell me.

MusicIntrument_Keyboard Errors
Thank you very much for your comment.

I replaced "inputsPins" ,"buttonState" "lastButtonState" as follows.

inputPins[i]

buttonState[i]

lastButtonState[i]

The number of errors has decreased.
But still there are 3 error messages.

For example,
In the void loop()

    if (buttonState[i] == HIGH) {                      
    noteOn(0,note,100);

The line
noteOn(0,note,100);
is highlighted and there are messages as
" invalid conversion from 'int' to 'byte' "
" initializing argument 2 of 'noteOn(byte,byte,byte)' "

In my understanding, talkMIDI() is a message with 3 bytes.
How do you define the data type of noteOn()?

I feel I'm getting better with your help.

I'm looking forward your reply.
Thank you very much.