Hi Dave,
Enjoyed the lesson yesterday. I started to do intervals a while back but peter-ed out after a while (there's so much to learn..I know I need to stay focused on stuff but it's hard not to jump around a bit). Anyway, now I'm motivated to get back into it.
I previously did a fun little project looking at interval frequency (how often different intervals appear in the songs I like. You should check it out. I previously posted it on the GT forum.
Dave