[laurieg]

I wonder if there's a bit of survivorship bias with this one. I've never been able to learn relative pitch after trying quite a lot of different methods, ear training app and playing a couple of musical instruments. If you're in a music school then perhaps your baseline musical ability is already relatively high?

[pclmulqdq]

I really doubt it, and I am not surprised that apps didn't work. I also don't think playing a musical instrument actually gives as much insight here as you want - it's a very indirect transfer if you're learning via classical methods or if you are learning purely by reading. Jazz and contemporary methods involve a lot more "listen, then play back" rather than reading. If you want to work on ear training and theory, cross-training with some jazz or contemporary helps a lot.

The way music schools teach this is relatively brutal and annoying, with a _lot_ of repetition and testing (eg "sing a major second above this note" and "identify the interval" questions), but I am not sure any other method works. At the same time, everyone going through an ear training curriculum does pick up decent relative pitch. This can take a year or two for college music majors, so it's not exactly a casual exercise. However, I assume the major barrier to entry is not musical aptitude but willingness to put up with bullshit, because it feels like bullshit when you are doing it.

[laurieg]

That sounds like a the ear training I have done but even after a couple of decades I don't have any real ability to tell the difference between intervals. For example, I listen to a musical interval and try singing up the major scale to match it but everything matches a fifth (in my internal melody). More recently I found the Sonofield app an interesting idea for learning the intervals but wasn't able to gain any consistency.

I remember many years ago in my music lessons being shocked that some people can hear multiple notes played simultaneously. I've never found much material on learning this skill.

[wbl]

Learning intervals by quotation can work. "Comet, it makes your teeth turn green" starts with a descending third and is a very memorable song.