Is it accurate and reliable if I try to slow down the tempo of a video or an audio in order to correctly identify the frequency of a note with Audacity? I don't have perfect pitch which is the ability to identify a note just by listening to it. I'm trying to find the frequency of singing notes from this video
...from 1:17 to 1:19. I don't know if there is a tritone or flatted fifth involved in the part or not. Are there microtones involved in the part?