There's no "back" buttom on the metronome. So we need to keep refreshing the page to see the chords or right click then "rewind"

And you could put some sound there too. For us to know the melody in the keys, and to tune right.

Other than that, this tool is amazing! I wonder how i didnt knew about it until now.

Great job man! Thanks.

PS: You might do another for piano maybe? LOL