Like Wikipedia, you could have an option to play the scale selected. All of the audios are available on Wikipedia. You just need the play button and code in you app.
Another possibility is to add the link to the scale's description on Wikipedia (the little i next to the play button on the Wiki page). It would be handy to open this page in a new tab so as to keep the recorder notes tab available to open multiple scales.
Like Wikipedia, you could have an option to play the scale selected. All of the audios are available on Wikipedia. You just need the play button and code in you app.
Another possibility is to add the link to the scale's description on Wikipedia (the little i next to the play button on the Wiki page). It would be handy to open this page in a new tab so as to keep the recorder notes tab available to open multiple scales.