Using metronome

So I started EMDR about two months ago and my Dr and I very quickly found that the usual tone they use for EMDR makes me dissociate HARD. While I was having a moment I got pissed at the tones and downloaded the old metronome app I used in highschool and immediately NO ISSUES. I told my Dr and he laughed and said I was a genius and that he would recommend it to his other patients who couldn't stand the normal sound. I just think it's funny how much 7 years of band can sit tucked away in your brain enough that you find comfort in a certain noise used for marching. Especially one that feels traumatizing at the time lol