I've made the point before, but you should feel like an imposter. You probably don't know what you need to know to do research in your field at an early stage as a graduate student, and even later there will be times in which your expertise is lacking. The way to deal with imposter syndrome is to acquire the necessary knowledge and skills. I could give your embarrassing examples of things I didn't know when I was 30 and with a PhD and already publishing in top journals.
Nevertheless, if you feel you are an imposter and everyone else around you is not, you are wrong. You are probably all in the same boat. The person who does not have imposter syndrome is probably deluded.
I am writing about a version of some Lorca songs with two guitars. One if the most famous flamenco guitarist, the other is another guy. The first thing I notice is that there are two stereo tracks. Aja! So one is probably Lucía, the other Modrego. The left channel seems to be more accompaniment, and fewer high notes. So is Modrego, the older guitarist, accompanying the 18 year old prodigy, Paco de Lucía? That is my guess. But that could be because I know that he later became the most famous one ever. What would be obvious to a flamenco guitar expert is just beyond my expertise. I've heard him play a lot of guitar on record, but I couldn't reliably pick him out of a lineup.