Levi Clay has done a bunch of ear training content which is <i>fantastic</i>, but it's only available via his Patreon page. Notably, he's going for <i>hearing</i> intervals first (that is, hearing it internally before playing the interval), then playing them/singing them/etc. Made a huge difference for me. [1]<p>This short video is awesome for ear-training for anyone -- it's presented for guitar, but it's general, with some fantastic exercises. Pretty audacious claim at the end, which I intend to test over the next few weeks :-) [2]<p>1: <a href="https://www.patreon.com/m/578011/posts?filters[tag]=Ear%20Training&sort=published_at" rel="nofollow">https://www.patreon.com/m/578011/posts?filters[tag]=Ear%20Tr...</a><p>2: <a href="https://www.youtube.com/watch?v=NX61J18YcHk">https://www.youtube.com/watch?v=NX61J18YcHk</a>