videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Electric Guitar Fretboard Addict - An Android Fretboard Trainer App For Learning Notes, Ukulele Fretboard Addict - An Android Fretboard Trainer App For Learning Notes & Ear Training